> only works if the cars behind you (extrapolating: ALL other cars) handle just as quick and automatic as well? No 'rollout', you need to require it for each and every car if this should make sense.

Better a fender bender than a dead kid.

Human reaction time hovers at about .2 seconds, last I heard. Machines have much better reaction times. I would place far more trust in a self-braking car than in a human-braking car.

Furthermore, a machine is always watching the road. What percentage of the time do you think the average driver is watching the road, scanning for dangers, taking note of other cars and obstacles in the vicinity? I would wager that it's less than 60% of the time, though I admit that I don't have numbers to back that up.

> (You SAVED a hedgedog. Grats!)

Hitting animals can inflict significant damage to a car. Just putting that out there.