I just got a T4 pro the farthest I have gone so far is 39 miles and ended with 17%. It's supposed to have a 60-mile range, but I don't think so. I need to find people in San Diego to ride with so I can get better. I have 389 miles on it so far. I have a challenge for someone that is way better than me. I found a little EUC driving course at the new Snapdragon Park. It's under the trolly track by the bamboo forest just a couple steps north toward the stadium.