Discussing outliers isn't that interesting, to be honest. There are exceedingly few cities in the US where not owning a car is practical for the vast majority of people.

Sure, you can live pretty much anywhere without a car - but you are now in the extreme minority trying to make that work and likely are making significant lifestyle changes/sacrifices to do so. I grew up without a car in my household in a very midwest giant-suburb style metro area, and it was truly a different lifestyle. I would not go back to that.

However, living in Chicago without a car is an amazing liberating experience, not the hinderance it was elsewhere.

While there are few cities like that in the US, a fairly large part of the US population lives in them. New York City alone has a population of about 9 million.

There's a grocery store across the street from me, connected by an underground mall. I don't even need to go outside to get to groceries, much less get in a car

Montréal?

yep! ;)