You may not agree with me on this, but isn't it annoying when you half way across a map when suddenly your car roles over? Then you have to reset the car and start all over again! So, i decided that there should be a new key introduced to make the car role over when pressed so you don't have to just start again when your car roles over after hitting a rock or something.
if you want to roll over without resetting your car and your car's damage you could theoretically put thrusters on all corners of the car and do it that way
Ctrl+R If you mean while maintaining the damage: This has been suggested before, about 15 times. It's a physics simulator, based purely on realism. So no. It's been decided that your "decision" that everyone needs a new key to roll back over, is wrong.