> Waymo will get big enough in San Francisco to affect this
SF public transportation is "good enough" that owning a car in SF is already a decision outside of pure transportation needs.
I lived in SoMA for 2+ years without a car using ZipCar occasionally to drive to SouthBay, which was cheaper than the car payment, insurance and the parking fee put together. Plus my commute was to Palo Alto which was neat because every Caltrain out of SF stopped in PA in the mornings, I used the bullets both ways every day.
Bicycles got me and my partner everywhere, faster and more conveniently (including in a bus or BART). We even went by to Napa on the ferry with bikes on it (once the Vine Trail cycle path connects all the way to Vallejo, I want to do it again - for now you can put your bike on a bus from Vallejo, no problem).
The Lyft would be used for the Costco runs or to lug things out of Tech Shop back home, when working on something bulkier.
Then I had a kid + moved to Mission bay which was still great for my Caltrain commute, but the kid changed the way I could just grab an Uber. There was no travelling light anymore.
I struggled to use a cab because we had to drag stroller car-seat everywhere we went with the kid and often even when didn't have the kid, because you'd pick them up on the way back.
The car was bought, even though it was a bad deal financially simply because it offered a fixed set of storage items we always had.
Even getting from location to location, the car was the slower option, it didn't make any sense except to serve as a home base for all things you needed to have with you.