Earlier this week c,mm,n (website in Dutch), the world's first open-source car, was revealed at AutoRAI, the Amsterdam car show. The initiative and vision behind the c,mm,n (pronounced "common") comes from the "Stichting Natuur en Milieu" (The Netherlands Society for Nature and Environment) and the three technical universities of Delft, Eindhoven and Enschede.
The vehicle's technical drawings and blueprints are freely available online, and everyone is invited to add their own ideas and modifications, provided of course that these are shared again with the community.
Environmental sustainability was a key factor in the development of the c,mm,n: the vehicle is therefore a zero-emission, hydrogen-powered 2+2 family car. c,mm,n drivers can also easily share information on traffic conditions, route planning and parking availability.
(There is, as some readers may know, another open source car project, called OScar, but this is according to Bruno Giussani still "in an early conceptual stage".)