after Turk jumps out of the car through the back window you can see cars avoiding to hit Turk. But the body on the street disappears behind the white pick up.
When the car carrying J.D. and Carla crashes after Turk jumped out, the underside of the car is shown to have no engine and no exhaust pipes running from the front to the rear, there is just an empty space where the exhausts should be, showing that this is only a minimized prop car rather than a fully working car.