noone1:

Um, I don't know a single American who drives without a seat belt.

Your view is short sighted. If it's thought that they don't wear a seat belt and that they might hit their head on the roll cage, then it means they would be more likely to lose control of the car during an accident. It's not like an accident completely stops your car dead in its tracks. You can still use brakes, steer, beep the horn, etc.

This could prove to be very bad. Imagine you hit a curb, you bounce in your seat hard, hit the roll bar with your head, are dazed and then the car continues to move straight and hits a person on the sidewalk. Had you not have hit your head, you maybe would have been capable of steering/braking/beeping the horn. Heck, maybe you can get out of your car and help someone else still.

This is why mandatory seat belt laws make sense. You aren't just trying to save the occupants. You don't want incapacitated people behind the wheel of any car at any time. It's bad for everyone.

 

You can't quite hit the bar behind the seat even if you bounce around, the bucket seat back gets in the way. Front sections, perhaps, but that part is optional anyway in the rest of the world market. And with a 3 point belt, while not as secure as a 6 point, the occupant can't be easily dislodged from the seat itself even in an accident. And if and accident is violent enough to dislodge an occupant even when belted in with a 3 point belt, hitting the bar is the last of the worries. 

 


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