while everyones out trying to get americans to buy fuel efficient cars, maybe we should also force them to be better drivers. then the safety concerns with ultra lightweight cars like this one would be less of a valid concern. once the switch over to vehicles like this one is complete, then a collision between two of them would probably leave you with an expensive repair bill. im not sure if there are presently any procedure to patch busted carbon fiber. i do know that when it fails it turns into a stringy mess, but i guess its better than getting impaled on a jagged piece of metal.