Austarion

Seat belts do their thing under normal driving conditions, but otherwise...
Check out the rag doll:
http://www.killsometime.com/videos/7214 ... Test-Drive

Notice the driver doesn't actually have a harness, but using the inside of the driver's cockpit, the wheel and knowing where he's going helps keep him where he's meant to be...pretty much like a harness would.