The Drivers of the day soon leaned that when on a level highway in forth gear, by sliding the shifter slightly forward but not nearly enough to put the bus into neutral, electrically created an ungoverned 4th gear leading to the first of the, I was doing 70 on the flat when this Greyhound, Stories. This is someone else’s quote, I love it. In 54 to 56 a standard GMC big truck was powered by a single 471 Detroit, in contrast the cruiser sported two 471s, it was so futuristic for its day. It is still cool if the environmental comfort system is working.