Great thread, if a little misplaced in the Exposure Discussion section? Indeed, though, I am feeling exposed to the importance of this discussion: the medium for our medium. As for myself, I live somewhat near San Francisco and the Bay Area, my current preferred shooting location, and I do not own a car (nor have i owned car for several years). I do not find my immediate living area particularly photogenic and the closest locations of interest are quite rural and require a car. I may move to Los Angeles later in the year where it is assumed by everyone that I will neeeed a car. God willing, I shall be able to strategize adequately and overcome this need. Photography came into my life after choosing the no car lifestyle, and for the most part, it blends in quite perfectly. Photography, for me, is about exploring the world around us, and making series after series of sound decisions. It's about walking the earth, literally and spiritually. Somehow, the working around not having a car brings me closer to that process of exploration and logistics (a definition of photography!).
And I use primes anyway so the concept of "zooming with my feet" is even further reinforced! ;-]
OTOH I do not (yet) shoot for a living, which could change my tune somewhat. But not owning a car has been an important aspect of growth for me, regardless.