I'm in the Bay Area and I can get around by bike and/or public transit just fine. My car gets less the 1000 miles a year on it, but I haven't sold it because I occasionally need it. The dog has to go to the vet (she'd jump off a bike after the first dog or squirrel she saw so that's not an option) or I have a passenger along. I've consider the ride share things like Zip car but my car is old, the insurance is super cheap, and aside from one annual oil change, that's all I do. However, if it starts needing repairs and parts, it's history. I'll use the bit of money I get for it to buy a Burley Travoy and pay for the infrequent zip car rental. Traffic is so bad I get most places by bike as fast or faster than in a car.