I feel like this was misread. The statement appears to say that he doesn't think they will completely displace manual driving of cars for considerable time. A

I feel like this was misread. The statement appears to say that he doesn't think they will completely displace manual driving of cars for considerable time. And that SAE level 5 arguably expects more than we expect from human drivers (many of us would not be safe driving in whiteout conditions on a windy mountain road).