Bike sharing

I heartily support a bike sharing program in SF modeled on Paris. I could definately see participating, it would be nice to be able to hop on a bike without worrying about getting it on BART, or having it get stolen. The one problem would seem to be one way trips -- someone hopping on a bike from Pac Heights and rolling downtown, but taking the bus back home. Nobody wants to ride uphill! Would it require a team of trucks and trailers pulling the bikes uphill?