thanks Reconnoiter you beat me to it again...
Anyway, I thought you wanted to throw the driver out of the car on collision, cause this was in your first post ->
- so that when the car collides with other objects in the scene the character gets flung out.
Or do you want to let the driver move a bit with his arms, torso and/or head etc.? Cause if you want the latter, just give the driver bones and animate it.
Cheers