Earlier quoted context omitted.
On perfectly marked roads, in fair weather, with no bad behaviour seen from other drivers in the video. Impressive, but the technology has a long way to go yet before it can replace human drivers.
I do not understand why the focus on self driving is so much on the whole trip. 90 - 95% of the time I am driving long stretches, I spend on highways. No problem if only that part would be done selfdriving. Those few minutes in busy town centers I do not mind to do myself. No problem of driving short stretches (10 - 15 min) either.
However statistics say that most of the accidents happen at the beginning or towards the end of the trip. There are environmental reasons (city vs. sub-urbs vs. cross-country) and there are human reasons.