Velib, Paris free bike, is celebrating its 3rd birthday. Of course it is not perfect but it really didi change the city and it became the first transportation choice for many Parisian (I am one of them!).
Lots of big cities around the world also started their free bike system like recently in London. In France, the city of Lyon (south east) was the first to install these bikes and since Paris did it many other French cities joined the movement.