The red car had less than 200 miles, still has less than 800 now. And the black 6 speed car had right at 1000 miles on it at the racetrack. The other question about what they can handle before drivetrain failure, I would say don't try sticky tires as the rear in the 6 speed car is allready pretty noisy with only 1400 miles of abuse with stock tires. Time to put it on a lift and clean the rear wheel tubs and make use of the lifetime warranty.