My father, in the 1960s, would not accept delivery of new cars unless the dealer installed seat belts. He'd never move an inch until everybody in it was belted up. It was the only car I ever rode in that had seat belts in it, for most of my childhood.

Seat belts have saved my life, and that of other family members.

My father was a libertarian, too.

Robert McNamara speaks about this in the documentary "The fog of war" - they identified the problem (people were dying in crashes), implemented a solution (seatbelts + signs reminding people they were there), but couldn't get people to use them. Thus is the human condition, I suppose.

Wow, that is definitely taking it too far. And not only is he putting his daughter in immediate physical danger, he is also inviting an intervention from the gov't if they find out. Definitely goes beyond my risk tolerance even if I don't care much for being told what to do.