You drive a blown up vehicle:

If you want to drive a blown up vehicle, go to the drivers side,
pull the guy out. When you're half way in the car, hit ESC and
type BIGBANG, hit ESC again and again hit ESC and type health Cheat
(ASPIRINE) and hit ESC Now you should be driving a blown up vehicle.
NOTE: THIS DOES NOT WORK ON MOTORBIKES!