I'm not sure, really. There is still the issue to be able to (safely) store your bike at both ends, while here it appears to stay on the 'circuit'. I studied a

I'm not sure, really. There is still the issue to be able to (safely) store your bike at both ends, while here it appears to stay on the 'circuit'. I studied a bit what happens in Paris with their "Velib" bike rental service (see visualisation here http://blog.logeek.fr/2008/3/31/data-visualization-with-ruby-and-rmagick-where-are-those-bikes http://blog.logeek.fr/2008/3/31/data-visualization-with-ruby...) and it appeared to be a real issue. An automated system with only identical devices and a circuit that goes in circles could solve this more efficiently I believe. Plus if 45km/h can be achieved with specialized, well maintained devices, this could be really interesting. In short, it's a somewhat crazy idea I wouldn't be surprised to see becoming successful :)