That part is almost signature worthy B.S.
Tell you what, I'll help you out: go to this site:
http://www.driverdynamics.com/precisiontraining.php
they are a stunt and defensive driving school that provides helmets for their course. I guess they must have "somehow" found ones that are safe! I'm sure they could line you up with a helmet that would be safe for an everyday driver.
Maybe you can first call them and tell them your theory about how helmets would impair driving, I'd love to hear that conversation..
Yours is the perfect attitude to help drive home this analogy. You sound so disapproving that anyone would choose not take extra safety measures when skiing, but the suggestion of taking extra safety measures in a car has you coming up with ludicrous excuses like "helmets would impair driving". On the ski side of things, there are people who have tried to claim that "helmets would impair everyday skiing". Now, do you FINALLY get the analogy?