When I was commuting, I saw all sorts of shenanigans in cars. I witnessed drivers doing the following: applying make up, eating with both hands occupied with food items, reading a novel, watching a portable dvd player on the dash, the entire range of cell phone interactions, turning full around to talk to someone in the back seat, leaning over to retrieve an item from the floor, changing clothes, getting a blow job, and a whole host of other activities that made me say things like, "WTF - Is that guy reading a newspaper while driving??"
I would prefer that all such people drive self-driving vehicles. The problem is that almost every driver is prone to multitasking when they have confidence in the autopilot feature of their vehicle. At the least, most drivers will fall asleep at some point on a longer trip. Why wouldn't they? People already fall asleep at the wheel now. Having an autopilot feature will make drivers more confident to drive when they're tired, or drunk.
So if a company is going to release an auto pilot feature, then it should be a true auto pilot. It needs to compensate for the fact that human drivers are lazy and stupid, and they get lazier and stupider if their car drives itself. There aren't enough dash warning in the world to make human drivers actively engage their minds on driving when they aren't actually driving. Studies show that even cruise control causes a significant reduction in attentiveness - and you still have to steer on cruise control!
Was the Tesla driver in this accident paying attention? I don't know. I certainly don't put any faith in anything the semi truck driver says, given that he is being accused of driving dangerously and the Tesla driver's family is blaming him for the accident. For all we know, the Tesla driver had spent enough time in his auto pilot car not having to do anything that by the time he realized the Tesla wasn't going to brake, it was too late. If reaction time is slow on cruise control, then how slow does it get on Ultimate Do-Nothing Cruise Control?
If a company is going to put Ultimate Do-Nothing Cruise Control in a car, then it seems to me that there's a fallacy in design if there's any reliance whatsoever on human reaction time to stop accidents.
That said, I agree with others - the time can't come quickly enough for this technology to be perfected. Human drivers are morons. Maybe this accident would have been avoided if the semi-truck was driven by a robot, too.