Bike sharing scheme Vélo'v

This is so awesome. You sign up for a card in the system, which you can use to rent a bike from any of hundreds of stations like this in the city. The first half-hour is free, and then it's about €1/hr. When you're done, you can return it to ANY station in the system. So brilliant. They've adopted this in other places now, including Paris and, uh, somewhere in Spain.