SAN FRANCISCO -- I'm here right now on a work trip. Transit in this urban area works. You don't need a car to get around.
I'm able to fly Tucson to Oakland, then get to SF easy on the BART. While in SF it is easy to get around on bike, bus, or Muni train. Ease of movement stimulates a city and benefits the economy.
People always point to Portland as a model, but Portland got a lot of its ideas from the Bay Area.
People in Phoenix and Tucson would benefit if our transportation planners and local politicians looked here for inspiration.