Atlanta seems to be a bit contradictory to some of your other thoughts.
The city itself is relatively small. A vast majority of area population lives distributed across the MSA, and it can create hellish traffic. I remember growing up thinking 1+ hour commutes were just a fact of life for everyone commuting from the suburbs.
Not sure what car ownership looks like, and I haven’t been in years, but I’d imagine it’s still much more than just 20%
Austin is also a car city, everyone has a car there. Public transit in Austin is a joke, and Waymo can't get on the highway so it's only useful for getting back to your hotel from Rainey Street, and maybe back to your dorm from the Drag, but nobody is using Waymo to commute from Round Rock
> Not sure what car ownership looks like, and I haven’t been in years, but I’d imagine it’s still much more than just 20%
I said "less than 80% car ownership", not "80% do not own a car". Technically these are not mutually exclusive but I think you read it as the second one. I haven't really found much analysis about how public transit interfaces with self driving cars honestly.