[pwf]

I imagine this working a lot like car2go, which I've used to commute in Austin. The cars are rarely at a central depot except for maintenance. They're left wherever you last used them until someone else gets in. This could only be better than that, as users won't have to walk to find one.

There's no reason for the cars to drive back into the city every evening. They could charge themselves while you're at work if they had to charge daily.