(that's Uber though, not Waymo)
Over the years I have increasingly become pessimistic about full, everywhere, driver-licence-free autonomous driving, in no small part because the foremost expert I know has made a similar move. He's putting that kinda tech at at somewhere around five decades away IIRC.
There's a strong tendency to put everything from Uber's OpenCV side project all the way up to the dreamed level-5 AV in the same bucket, while I think the nuances of the tech drastically change what kind of technological wall will be hit when. Personally, I am more and more putting my money on AV's that are limited to easy roads. (With easy being 'highways' now and 'separated traffic flows' in the near future.)