tbh waymo's ceo said what I said here: https://www.cnet.com/roadshow/news/alphabet-google-waymo-ceo...
Even the straight, flat, streets can be nuts - like Polk St: pedestrians can jump out anywhere, slalom of delivery trucks, delivery scooters, ride-hail cars, double parallel-parked, with bike lanes - its a major cyclist route also busses and those little tourist scooters - oh and the electric unicycles that are always blowing stop-signs! the type, shape, size, and behavior is all over the map. go two blocks over and you have to deal with cable-pulled trolleys having the right of way across the 12% grade intersection. last week there were hundreds of drunken santa-clauses jay-walking between bars. oh and the line of tourist cars (who knows what traffic behavior they might follow!) heading up to see the crooked street - as the high school is getting out.
LOL get your memory checked, memory checked, if you recall driving in SF as unproblematic.
All the CEO said was that he thinks autonomous driving won't work in every condition or ever be perfect, and that they're always finding and working through unique challenges. That's quite a bit different from "our cars only work on straight lines and with 365 days of sun".