After you build up your car, you can't drive more than 400m until it's broken. The Engine or whatever get's damaged over time automatically.
I don't think i missed something.
The car was ready to go, nothing missing and everything pristine (Battery pristine, Spark Plug pristine, Radiator pristine, 4 weels pristine)
I filled it up with 1x can of fuel and 1x can motor oil.
The car started instantly but after 400m the engine was red and the car was broken.
Happened with 3 cars i tried to move.