>I risk nothing by not participating.

But you do, not participating has opportunity risk. It's an elementary CBA - give or take 40 thousand people will die, which could include either or both of us, for every year of delay in self-driving. Be it for 'prudent', 'common-sense' trials or otherwise.

It's scary as hell[0] that there are otherwise smart people who don't see the car-shaped gun already pointed at them just because it has grown familiar.

[0]Because that line of thinking will cost tens of thousands of lives.