Paris' highly successful Véllib program is almost definitely coming to Chicago. Apparently the city gov't is working out offers from JCDecaux and Clearchannel. While I would rarely, if ever have to use it, the benefits to cycling in Chicago would be enormous if the program were successful (more bike lanes, more drivers accustomed to and aware of cyclists, less traffic and pollution, and so on).

Quoted: Launched in July, Paris' "Velib" bikes were part of the mayor's idea of making the city more ecologically friendly and reducing traffic. Just two months on, the bikes seem to be changing the way people get around the city.