Good! Americas obsession with cars is one of its most glaring deficiencies. Every city should be accessible without a car, however unless you are in NYC, Chicago, or LA, or San Fran, well then that just isn't true.|
I would definitely not include LA on a list for accessible without a car, and San Francisco is debatable.
I have taken several trips to Los Angeles without using a car. It's not convenient, but it works if you allow enough time - the bus lines do at least exist.
Somehow, 22% of Angelenos travel to work without a car. That's not as good as San Francisco, but it's a lot better than, say, Nashville.