That is correct but it did not work from killing the lady walking her bicycle across the road in Arizona. The Person in the back seat of the car was watching videos on her phone while she was supposed to be watching the road. Ran right over the lady. Never even hit the brakes. But, they said it was a glitch and is "Fixed" now. Right.....At the moment they still need a person in the vehicle to like you say 'override' the system in the event of an emergency, so they are still dependent on human reaction times and there have already been deaths caused with this system. Correct me if I'm wrong but I don't think companies are far off making cars totally autonomous, these are the one's that bother me the most, there is this thing about the car having to make a decision on what to do in the event of a collision, does it run the school kids down crossing the road or hit the lone motorcyclist or little old lady? the needs of the many theory. I'm not to keen on that bit.
I am by no means supportive of this autonomous self driving cars or trucks but I am afraid it is inevitable and it is going to happen. Bad news for us riders. I am not keen on it either.