A car traveling 60mph is traveling 88 feet per second - double this because the truck is likely traveling the opposite direction at the same speed. Average hum

A car traveling 60mph is traveling 88 feet per second - double this because the truck is likely traveling the opposite direction at the same speed. Average human reaction time in best case scenarios is ~215ms (see http://www.humanbenchmark.com/tests/reactiontime http://www.humanbenchmark.com/tests/reactiontime). A Tesla Model S P85D can brake from 60-0 in 102 ft. (see http://www.edmunds.com/tesla/model-s/2015/road-test-specs/ http://www.edmunds.com/tesla/model-s/2015/road-test-specs/) Assuming the driver is perfectly attentive, and hits the brake immediately upon noticing the truck, they would still need at least 139.84 feet to come to a stop. This also assumes the truck is no longer moving. If it is you'd have even less distance to stop. I don't care whether you're waking up from sleep, or completely alert and instantly react, it's a huge assumption to think that any possible reaction would have prevented an accident or fatality. It's just as likely that even had autopilot engaged the brake immediately, the truck still would have plowed into the Tesla and caused a fatality. tl;dr - two way traffic involved in a head on collision is a dangerous game, made doubly dangerous because of the combined speed of both vehicles working against inertia.