Bike Sharing In Barcelona, Spain

I saw this video on a cool bike sharing program in Barcelona. The program is called 'bicing' and there are over 6,000 bikes for sharing in over 400 stations around Barcelona. I'd like to hear your opinions about what would make this work in the bay area...

1. Is this akin to bike renting for tourism or can you use this for bicycle commuters also?
2. Would there be any value in having Caltrain and the cities along the route come together to make sure that there were bicing stations at every train station and every major parking garage in each of the destination cities.?
3. What are the drawbacks to making this more universally popular for bike commuting (my bike doesn't fit me, what do I do for a helmet, etc...)?

Anyway, check it out. It's a short and pretty cool video that explains the program well.

Bicing in Barcelona