I am also very suspect of the origins of some of these regulations as well. Modern airbags are wonderful, don't get me wrong, but it's not unreasonable to question, in the US at least, whether auto manufacturers and their lobbyists have been causing new rules to be invented that coincidentally both require fancy, expensive technology AND increase the difficulty/ cost of meeting the standards as a mean to prevent new competitors from starting up in auto manufacturing. Rear-view cameras, eye tracking, and drunk-driving detection all come to mind.