Waymo has tested in 25 cities, they aren't currently in 25 cities. Of the 600 Pacifica's they have, only ~160 are deployed. So to do 25,000 miles per day, that's an average of 156 miles per vehicle.
The idea of moving people to public transit sounds good, but I wonder if there's enough spare capacity in most transit systems to serve lots of new riders...
If your suburban bus stop is a 10 minute walk from your home, and the bus comes by once every half-hour, and then you have to transfer to an every 20-minute bus, that is sufficiently offset to make the transfer take time... You aren't going to have a good time on your commute.