This website and Revolution Summer have a similar purpose of showcasing projects that may spark social change or resolve pressing issues, like access to water or enviromental pollution by proliferation of combustion engine vehicles. Of course, the difference is that the Buckminster Fuller Idea Index gives a prize of $100.000 to the winner project each year.

The winner of the 2009 edition is this project by MIT researchers that proposes to replace the private owned fossil fuel vehicle traffic inside large cities with a network of battery-powered small vehicles, that can be rented at convenience in racks spread throughout the city, similar to the public bike rental systems in cities like Barcelona or Paris:

Mobility-on-demand systems provide racks of these vehicles at closely spaced, convenient locations around an urban service area. Vehicles automatically recharge while they are in these racks. Users walk to the nearest rack, swipe a credit card, pick up a vehicle, drive it to a rack convenient to their destination, and drop it off. These are, in other words, ubiquitously distributed one-way rental systems. These systems are highly efficient in reducing urban congestion, energy use, and carbon emissions. They are synergistic with ubiquitous wireless networking and distributed intelligence, and with solar-friendly, wind-friendly, fuel-cell-friendly smart electrical grids.