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%