Have downloaded the app, but not yet given them a try. Great idea, as long as people don't ride as arseholes. Curious how they keep the batteries charged, does someone go around changing the batteries over or is it solar powered?
I like the idea of cheap alternative transport. I used to ride the Boris Bikes to and from work when in London. Added bonus no helmets required on UK roads

They also had dedicated bicycle "highways", I could get to and from work in under 30 mins for 1 quid each way