Engineering the World’s Fastest Cars with Jason Fenske & Neil deGrasse Tyson

[@EngineeringExplained]

Had a lot of fun with this show, thank you all for having me on!! Glad we all know how to say Porsche now. 😂

[@MaverickBlue42]

I'm glad you answered honestly and backed out of the hydrogen question towards the end based on the scientific principle that you didn't actually know....I'm not saying the hydrogen economy is or isn't going to kick off anytime soon(altho we'll need it for certain applications once fossil fuels are retired, and it probably won't be economically viable until then, when other fuels are no longer being produced en-masse), but hydrogen, or any volatile gas doesn't just go boom. Every volatile compound has an upper and lower concentration limit, beyond which there isn't enough fuel/oxidizing material to complete the combustion equation....dunno what that is for hydrogen, but "the whole thing" definitely does not explode instantly except under very limited conditions....

[@Klemeq]

Aww, I didn't even hear weight transfer to the rear tires come up when it comes to peak acceleration.

[@StarTalk]

Thanks for coming on, it was our pleasure!

[@SilentRacer911]

@@MaverickBlue42 Hydrogen is flammable down to very low concentrations, like down to 200:1. And I personally don’t think we will be able to have it truly viable until we have the technology/strength/security to keep liquid hydrogen at the stations, unless we just make the shelter a tank 🤷‍♂️, too much volume

[@joakimlindblom8256]

Two of my favorite science/technology KZbinrs together, what's not to like 🙂 (And glad I can now finally correct with authority my friends who leave the "e" silent😉)

[@LogisticalHurdles]

I've been watching Engineered Explained for quite some time now. I really hope you guys will bring Jason back on again to discuss EVs.

[@joshentheosparks7492]

Or too discuss anything. Someone's gotta bring this astro-nerds back to the ground!

[@dirkbester9050]

@Mlgardener I am interested in your dungeon master based get rich quick scheme. Which version of the manuals are required?

[@dashwithhash6106]

No way !! Engineering Explained !! Didn’t expect this collaboration, can’t wait to see this 😁

[@dashwithhash6106]

I was so excited I had written the name of his channel backwards 😂

[@helphelpimbeingrepressed9347]

@@dashwithhash6106 denialpxE gnireenignE or klaTratS? 🤔😁

[@rustywater3219]

That's what I was thinking

[@jimmytimmy3680]

He was ok? He needs to be better prepared for the questions in the future. He answered with a lot of I don't knows.

[@Silver0se]

OMG ME TOO THIS IS INSANE!!!!!!!!!!!!!!

[@rogerwilco1777]

So glad you had Jason Fenske on. Two of my most favorite things are Vehicles and Space.. but more importantly understanding how it all works.. you guys do a great job at making it interesting.

[@JustinMcFly1980]

Me too bro. Alway day dreaming about in space drag races or time attacks but would have to build space roads like on Thor 🤣. But the scene would be beautiful and amazing. Only thing is we won't be able to hear the cars. 🤣.

[@SilentRacer911]

I have been waiting for this episode for a long time, someone knowledgeable with cars… FINALLY!!!

[@Mahlak_Mriuani_Anatman]

Same

[@exafrost]

This!!! ^^^

[@Faisals_Adventures]

He is smart but he plays too much to his channel audience and talks a lot of crap about Tesla.

[@dannymartial7997]

This is such a good collab. Engineering Explained is a great channel, and Jason is awesome

[@ShainAndrews]

It isn't a "collab". Fing kids...

[@405DC]

​@@ShainAndrews Collab is short for collaboration. -To work jointly with others or together especially in an intellectual endeavor. -A situation in which 2 or more people work together to create, achieve, or promote. Fing old head...

[@grzegorzsaj7940]

Now, that was a pure and highly concentrated pleasure to have "Engineering Explained" at "Star Talk. What a masterpiece. Greatings from Poland.

[@Sethhall618]

This is the combination I needed and didn't know I wanted! We need Jason on the show again sometime!

[@davidjames8505]

Jason at Engineering Explained makes some of my favorite car related videos.

[@HCkev]

I'm not that much of a car guy and I love his videos

[@fajon2533]

Regarding the discussion about putting grooves in a race track so cars can go around corners faster, reminds me of the 2005 F1 race at Indianapolis where the track had been “diamond ground” to provide more grip which led to the side walls of Ralph Schumacher’s tire(s) giving way in a highly banked turn during warm up causing him to slide into the outer wall in dramatic fashion and ending up in the hospital. Also resulted in all but three teams, six cars, to drop out of the race. BTW, love this channel and Engineering Explained. Thank you!

[@JaghataiK]

Neil chastising Gary for interrupting Jason after doing the same multiple times is just hilarious.

[@user-tc1fw5ms5s]

I LOVE Neil and I love him running the show and explaining so much. And also someone close to him should kindly bring up interrupting a little less haha😂

[@hhj4196]

Trying to bring up his personal character while omitting the wonderful intellect and kindness as an educator to humanity is way more hilarious.

[@DannyJoh]

I love that Neil adds interesting facts into the conversation, but he just stole Gary's question and took credit for it 😂

[@azcardguy7825]

It’s so damn annoying how often Neil cuts people off

[@DannyJoh]

​@@azcardguy7825 Sometimes yes, but he usually cuts off to clarify things or rephrase a question or to get back on track, so I usually appreciate it 😊

[@ohheyitskevinc]

The conversation about 17 mins in about engine dependability reminds me - my first car - an Austin Mini had a manual choke. Pull the handle and it restricts air into the carburettor when starting so the fuel and air mixture is richer, so there’s a better chance it’ll start. Of course, you have to remember to push it back in or you’ll go off down the road with a blue cloud behind you. Push it back in too soon though, it’ll stall. Fun times. I now have an Audi where I press a button to start it, but I do miss my old Mini. Useless when going on dates I might add 😂

[@Chris-hx3om]

The cloud should be black if the mixture is rich. Blue smoke is oil being burnt, meaning piston rings or valve guides were worn.

[@bwatts27]

The McMurtry fan car is the fastest 0-60 1.3 sec! Really wished they talked about this car as it has maximum downforce from a stop, giving it huge amounts of traction.

[@JustinMcFly1980]

🎉🎉🎉 yes this is the way

[@bigdavedayday1581]

A top fuel car is even faster much much faster

[@borshardsd]

Pretty sure they are speaking in the context of production. Fan cars are awesome and I'll watch the top duel cars run any day

[@smokeymcphattey6755]

Thank god I'm not the only one mentioning downforce...

[@lollipopjuggs]

The rimac is production right?

[@bbbl67]

Been subscribed to Jason's channel forever. I love it when several of my channels get together.

[@JT_771]

I love Engineering Explained ... what a fantastic combo.

[@borshardsd]

So good to see great content provider collaboration like this!! Jason is awesome on his engineering explained channel.

[@jeffoh5787]

Anyone who isn't subscribed to Jason, DO IT NOW! He is a great, awesome, honest guy.

[@diegofernandez4789]

Love seeing Jason in this episode. Been following him several years now.

[@ryuradeon]

Some advantages they didn't discuss about a rotary engine is due to its compact and lightweight design, you can mount it lower and further back than a typical piston engine, and achieve a light, powerful, front mid engine layout capable of producing serious power for track use.

[@christopherjackson210]

Hey guys! On the subject of drafting I have one for you. I was once somewhere between crystal springs and ely Nevada when I realized too late I was not where I thought I was. I had no cell service and no local map but my last fix suggested I had something like 120 or 130 miles to the next fuel stop and my car computer said I had around 100 miles of range. I was midway so just turning around was not an option. However, I knew about drafting and came upon a tractor trailer going a consistent 50 mph and I just fell in behind (at a safe distance as the effect is still there to a degree even if you are not close enough to be unsafe) and for the next 2 and some odd hours cried as literally everyone else, including other big rigs, passed us by. I not only made up my deficit but I rolled into the next fuel stop with an estimated 20 miles still in the tank. Needless to say, huge relief after a very tense ride.

[@Chris-hx3om]

You don't carry a street map in the car? That's just bad planning. I carry an old street map, and cash. Internet is not forever, just ask the people caught in towns isolated by bushfires.

[@christopherjackson210]

@@Chris-hx3om sadly, no. That was very poor planning no doubt. And I was certainly extremely nervous and kicking myself for putting us in that position for sure. But, in the end, I had a cool story to tell 😝

[@solomzinofemele1136]

I'm quite impressed by Neil's and Chuck's knowledge about cars

[@Mahlak_Mriuani_Anatman]

Well he's all about the physics

[@exafrost]

As a car nut/Petrolhead/Gearhead, I loved this episode guys! Not to say I haven't thoroughly enjoyed all of the other episodes... I just understood this one a bit more than some of the others. ;) Keep the shows coming! This is fantastic content and my favorite way to learn something new.

[@atrain132]

"Hello everyone AND welcome"

[@MarioDallaRiva]

Great guest! Great show 👏🏻👌🏻

[@diegofernandez4789]

... And if you have any questions leave your comments below

[@atrain132]

@@diegofernandez4789 🤣😂

[@mecanoman]

Mechanical engineer here too. To add information to a couple of questions. About the supercharge electric motors question, it's possible to increase energy output complementing the battery with super capacitors, they don't hold much energy compared to a battery, but they can discharge it way faster. And the volatility of gasoline vs hydrogen question. Hydrogen is more volatile because its molecules are so small that they actually leak through materials like water on a mesh, but at a much smaller rate. Loved to hear Jason on the show!

[@wasbeen]

Going back to original acceleration question: as I understand it, Neil based his calculation on 1G vertical on the tire, I think you get more than the car accelerates due to the rotation of the car (around Y axis) loading the tire to more than 1G.

[@5353Jumper]

I thought part of the 300mph limit was actually the tires. But more about the rotational force on the tires, ripping apart at those speeds. That is why salt flat jet cars use solid steel wheels that are strong enough to take the rotational force.

[@marcinjarmolowicz]

Great collab and hope to see Jason more!

[@oaguilera81]

What an amazing episode. Having Jason with Chuck & Neil is so interesting. Invite him more often, please. I LOVED this episode. Great team and chemistry 👏🏻👏🏻

[@superandan]

Really good episode! But I lacked super capacitors in the acceleration discussion for getting a lot of power and it was clear that you were not updated on the possibilities for recycling materials in batteries which will be much cheaper than mining.

[@andoletube]

Jason qualified as a mechanical engineer, so he isn't really primed for some of these questions regarding EVs and battery chemistry.

[@siphosethu4739]

It's great to see both my favorite astrophysicist and engineer coming together. Greetings from South Africa!

[@blkcyborg92]

You guys did it once again, I love this episode of Star Talk!

[@jeffjackson2604]

very interesting conversation. Would love to hear more of about this conversation it is what it is.

[@ngnatural]

Neil had some challenging questions for Jason and he powered through it! Bravo sir👏🏽👏🏽

[@DC5Brandon]

29:05 Our family owned several 70's Volkswagen Beetles. We could drive very close to an 18 wheeler truck around 55 MPH and lift completely off the gas pedal and continue moving unassisted. The air coming off the back of the truck pushed the back of the Beetle and the truck also removed any air resistance in front. Very cool, although this required driving very close to the truck which was not safe, plus if I remember, this drafting method required some slight acceleration occasionally to stay in the "pocket".

[@alexisrivera200xable]

These sort of hypermiling techniques work because of how the aerodynamics interact but as a practice is downright suicidal. It is why it's almost universally illegal in most places. Sure you don't have to overcome air drag because the Truck in front is doing it for you which save you a ton of gasoline but if it has to brake suddenly you have zero time to react guaranteeing an accident and perhaps it can end up getting innocent people involved/injured.

[@matthewheitzman5993]

To add to Neil’s comment about drafting a semi for fuel economy The sport bike I now have tells me my instant consumption AND I found, that at 65mph (where aerodynamics are just beginning to play a roll) when I tucked behind my windshield my mpg went up by 6-8 I was amazed at how big the number was at such a low speed!

[@RustyChapman]

This is cool! I'm not only a Star Talk subber, I am also an Engineering Explained subber. This is really cool!

[@sacksj]

I've been watching both channels since forever. Absolutely love this episode

[@Brownyman]

The cross over I never thought I’d see! Love it!

[@mateuszmuniak6254]

What a fantastic crossover. I don't expect EE in StarTalk

[@alozborne]

Jason really is a genius at explaining things in simple terms and using perfect analogies. The comparison of tires on the road to a rack and pinion, for example. Or comparing a rotary engine to a spinning Dorito 😂 I've learned so much from his channel because he's so engaging and he has such a knack of breaking down complex topics. Great guest, hope Neil returns the favour and guests on Engineering Explained someday soon. I fully realize that Neil is a very smart guy, but I wish he would give a conversation more room to breathe sometimes, rather than interjecting all the time to showcase his intelligence and knowledge. Although this was an interesting conversation, it could have been even better if more time had been given to the guest to impart his knowledge and wisdom on a subject matter for which he has the expertise.

[@hanstubben]

More time with Jason on your show please! I have a question, is it better for the environment to have people drive 25 years plus in the same car on ethanol or have new electric cars every 10 years? I do live in Brazil where old cars go on for decades and use ethanol as fuel. The ethanol plants use the leftover materials from the sugarcane to make electricity with steam generators, and they have a surplus over their own consumption that is sold to the grid.

[@Life_42]

One of the best StarTalk episodes ever!

[@drewroberts1913]

Speaking of aerodynamic drag and drifting behind a semi, there are systems of assisted driving with some of those trucks that allow them to convoy very close to each other that improve speed and fuel economy. I've also heard that there is a goal of having specific lanes with self driving vehicles to drive in a NASCAR style bumper to bumper at a very 200mph and they will communicate with each other as conditions change.

[@teemumyyrylainen9247]

Weight transfer and suspension geometry and settings for rebound etc. Matter a lot when you go for max acceleration. As does the whole cars length to act as an leverage against the road.

[@indyola1]

The grooves in the road, including the runways the shuttle landed on are there for the same reason that we have grooves in tires: the channel away water and reduce hydroplaning. The do not keep vehicles from sliding sideways at all.

[@upaiaq]

Great to see Jason on here! Been following since the beginning.

[@ecospider5]

Drafting a semi definitely works. I drove a 1975 nova, that normally got like 12 mpg, close enough to semi’s that the semi driver could not see me in their mirrors. I could go 10-15 miles with the fuel gauge at zero the whole time. I could take my foot off the gas and I wouldn’t slow down. If any of those semi’s would have slowed at all I would have had a semi hood ornament.

[@PolarisRider06]

Just a couple of minutes into this and looking at comments too and I noticed something that it doesn't appear many people have much knowledge about. Instant center and anti squat, it's what allows dragsters to accelerate like they do, pro stock drag cars to accelerate like they do, and semi trucks to accelerate like they do (also comes into play on everyday vehicles just not as much effect) instant center is the point the rear axle (in a rwd vehicle) is lifting on the front of the vehicle ( it's the rotation about the center of the rear axle and the point it is being lifted at) and anti squat is a part of the geometry related to how the rear suspension reacts, if it has anti squat built into the geometry it means that instead of the rear of the vehicle "squatting" when it accelerates under power it actually stands up and pushes the rear tires into the ground harder. Add in adjustments to instant center and you can increase the amount of weight that is actually applied down into the ground on the rear tires which increases the contact patch of the rear tires which increases the amount of force needed to break the traction between the tires and the road surface... some of that may be included in the "Engineering the world's fastest cars" video I'm going to watch right after this

[@PolarisRider06]

And I think this comment posted on the wrong video due to the next one starting to play before I finished typing.

[@paolocastellano343]

Guys, let's look at the anti squat of the 4-link suspension of drag cars and how a low inflation pressure on a drag slicks massively increases the surface area of tire contact patch. The adjustment of the instant center of the car can be adjusted so that the more the weight transfers to the rear of the car, the more the 4-link suspension will push the tires into the pavement for greater tire contact patch surface area. The rear of the car in this scenario will actually lift up as the weight transfers rearward...

[@techn1kal1ty]

I blew up the 13b rotary engine in my 91 rx7, rebuilt it, then blew it up again. I loved every second, and want another one in the future.

[@bobnelsonfr]

I love it! I've followed Jason for years, so seeing Neil hook up with him is GREAT!

[@rodneybowen6190]

For the most part, I believe the grooves in the road paneling are provided to prevent/reduce hydroplaning.

[@kellyrobinson1780]

On "drafting"/slipstreaming: Geese and ducks had that figured out a long time ago. That's why they fly in "V" formations. The first bird is just flying. But the first two BEHIND him are flying in his wake, taking advantage of reduced drag. And then it's just "lather, rinse, repeat" until all the birds in the group are in formation. I knew that each bird in line was experiencing reduced drag, but I DIDN'T know that having something in your slipstream didn't ADD to YOUR drag, and in fact, might reduce it some. Never heard that before. I can say this: the lead bird is at a slight disadvantage compared to the rest. He's using more energy than any one of the others; so from time to time, they "rotate"; another bird will take point for a while, and then will swap out with another; and so they all take turns as lead bird, to keep things even.

[@Martinez271992]

What a delight, awesome getting jason on here!!

[@cosmoarmstrong8701]

The 300 mph question is affected by the tires. Bugatti talks about this in one of their videos. They test all of their vehicles up to 230 mph, after the test the tires have to be replaced. Bugatti states they may be able to go faster but the tire compound would just fall apart.

[@JohSno]

Yes please, more of Engineering Explained.

[@23for82bigs]

In school my professor told me cars get the maximums acceleration when the tires slip about %10 so essentially like sticky gum adhering to the road. On top of that the weight transfer and suspension would equate to more than 1.00 G of force on the driven wheels.

[@TheSurfRyder]

This was awesome. Jason from EE is amazing and Startalk crew are amazing. I apologize I don’t know the English bloke but what an amazing group of people to listen to for an hour. This was an amazing show.

[@joehntr3]

I no longer am able to ride a motorcycle any longer but in my younger days i did some wild things. When Neil spoke of drafting an 18 wheeler I can identify with this and a story from my younger days. While riding on the interstate through west Texas one day I decided to try and draft an 18 wheeler. As I began to get closer to the rear of the truck there was a lot of turbulence making me wobble from side to side. I made the choice to keep going and what do you know the turbulence faded and was no longer a problem. I now felt my motorcycle begin to gain speed to the point that I had to back off of the throttle to keep from hitting the back of the truck. In the end I had backed off of the throttle over 50% and still was able to maintain my speed. An after thought to this I could also feel myself being pulled forward and getting lighter on the seat of my bike.

[@jesusrincon1591]

I have been watching EE for years and its so nice to see him in another channel like this one

[@michaelccopelandsr7120]

Neil and Chuck for 2024

[@daveboylan247]

Hello and welcome! Great adding Jason here!

[@danielscurlock6048]

Great show! Really love how you all interact, and also really enjoy all the learning provided by you. I must say, though, that I am now quite tempted to become a tailgater of 18 wheelers😂

[@jordanking6187]

This was my most favorite episode in a long time

[@1danny]

Great episode. Please have more engineering related topics/guests

[@EvanMoon]

On the interstate as you get closer to the back of another vehicle, noticed that you do not have to push the gas pedal as much. The man who set the top speed record on a bicycle was behind a car to make it easier for him.

[@Burgo361]

I really didn't want this to end I hope there is going to be more of this discussion

[@paulgracey4697]

About drafting big trucks, competitive bicyclists seeking the fastest speeds a human can pedal will sometimes do it behind a drag racer with a shield to block the wind. It is necessary for that bicycle to have a rubber bumper on a pole out in front to prevent being sucked into a collision with that dragster. Also regarding the limits of battery powered cars due to weight, just wait until the energy density per kg doubles, which is a real possibility. I did a calculation for converting a particular IC engined car to electric, and came up with 500 lbs of engine, exhaust and fuel tank removal before having to add the 1000 lbs of battery for roughly equal performance. Drivetrain weight was about equal without the multi-speed transmission. Now a battery of half that weight can be developed so we are getting there. Further more, Neil, there actually were a couple of flying steam powered aircraft built in the early 1930s. Range was a big issue, but it did fly, and could reverse the propeller upon landing without variable pitch mechanisms. Not too practical, like steam balloons (also a tested possibility) but with the right metalurgy and advances in thermodynamics the Wrights may have gone that way.

[@sandeebrooke5623]

Sandee Brooke from Tucson Arizona, I have Designated Clothing, Interiors and been on Video for most of my life. I'm amazed by the backgrounds Dr Neil and Lord Chuck and Gary are in front of. Are they using Green Screens or real rooms? I'm sometimes distracted by trying to figure out where you are? I have to watch some Podcasts many times before I understand, sometimes I watch to figure out where you guys are. Love everything you all do. At 76 I am learning more each day. Thank You 💗

[@Cabriellopez]

Also chemichal changes to what is the internal part of a bettery. There are multiple "new" compounds being researched and tested with great results.

[@terrellcarey6178]

Two favorites together. I like this

[@AliasHSW]

What a treat! The two greatest nerds in the universe in conversation!

[@mr88cet]

In a rear-wheel-drive car, as you accelerate, the rear will be pushed down for a force greater than 1G. The average force on all four tires is 1G, but much more on the drive wheels. Same thing on an emergency stop: the front tires get for more than 1G.

[@louspinelli1745]

Two great channels cross-pollinated, what a great way to start a weekend! 🎊 🎉

[@segaiuolo]

The thing of the grooves on the road to supposedly have better grip in corners I've seen it done here too (one day: "finally, they're laying down some new asphalt here!" the next: "did they ruin it already?!") and I think it's idiotic: the best grip you can have is between a slick tire and flat, solid asphalt, nothing less. Whenever I drive on that corner I mentioned, especially when it's raining, I feel like losing control in any moment (that would make sense if the purpose was actually to make you slow down)

[@marvinmauldin4361]

Another problem with rotary engines is combustion chamber sealing. Piston engines have piston rings and valves to seal the combustion chamber. Rotary engines have a non-circular chamber in which the "piston" rotates. The three "moving" chambers are separated by spring loaded seals at the tip of each lobe of the "piston.' There also have to be circumferential seals between the rotating "piston" and the front and rear case walls of the "block." When these engines were introduced, the effectiveness and wear rate of these seals was a major problem. Not to mention trying to explain them.

[@michaelallen2501]

Finally. As an automotive enthusiast, it's hard listening to anyone outside of a literal mechanical engineer talking about cars.

[@tjyau7068]

Wow two of my favorite channels collabing thats awesome.

[@Joey.Alford]

26:01 Jason’s answer to the “drag scaling with velocity” question was 10/10 🧠 💥

[@ramonacevedo356]

Jason is the man, he got me to love math again. Been witching both u guys from the starts... doogie

[@kulaengineering]

Super fun episode. Thank you to All! ❤

[@michaelluong6484]

This deserves so many more views

[@discpl4yer]

Acceleration is enhanced with downward fans: Vacuum under the vehicle. I wish they had touched on this. Great show.

[@michaelgian2649]

This conversation just got started. Please continue.

[@hardcoreep]

Absolutely great show. Two great minds

[@rayRay-pw6gz]

In drag racing, they have a timing sensor that is tripped a few feet from the start line . This is a standard in racing . That is why they sit there and spin the tires when the green light comes on. So you can have a lower run time and still lose the race if your opponent crosses the finish line first. That is why a ROLLING START is used in 0-60 times.

[@lucidmoses]

Jason, A though, When the car starts moving it transfers some of the weight to the back tires. The back end goes down a bit. That's an acceleration downwards. So, for a brief time you have more then 1G. Sure that's a short time but it's at a very vital time. Does that add up to any benefit?

[@defxed]

As a car guy this was an absolute blast to watch....please do a similiar talk with motorcycles

[@jayscranton5517]

Nothing magic about a friction coefficient higher than 1. 1 means that a piece that weighs 1 lb requires 1 lb to make it slide. It is pretty easy to find material combinations that exceed that.

[@radicallybean]

JASON!!! god, i love this man.

[@718Insomniac]

This should be a great episode!

[@squidcaps4308]

There is also some amount of adhesion, chemical bonds between the rubber and the road.

[@iaov]

This was fun. It always fun when you get smart guys talking!!

[@maheshpatnala]

To Gary's question, of having a turbo equivalent for EVs. Jason answered it by saying bigger battery capacities(or Sizes) But I think it is also possible if we reduce the resistance of the material used in the motors. Sorry If I am wrong.

[@Obi-WanKannabis]

increasing the batteries is more akin to increasing displacement in an ICE rather than a turbo

[@AdamWithem]

I love this collaboration!! 2 of my fav tubers in one show

[@etmax1]

On the subject of tyre grip, Neil is correct because the tyre is not a rigid material, so it has give and regardless of its texture will reform itself to the road surface.

[@theunknownunknowns256]

Gary take a look at the McMurtry Speirling fan car at the Goodwood hill climb race.

[@theunknownunknowns256]

Gary take a look ar Redwood Materials, Northvolt for battery recycling. Of note electric vehicle manufacturers a starting to horde their old batteries already now, Nissan for example recently expanded their lease of electric vehicles in Japan for the access to those batteries at end of usable life. Also, we don't throw away lead acid batteries, a entire new industry was ramped up world wide for those.

[@Billybobble1]

Please have Jason on again many times.

[@thomasmann3560]

As an automotive tech, I have a bias against mechanical engineers. As a mechanic, I love this particular engineer!

[@jedi1sgl]

Engineering Explained is a staple in the yt car community.