The bicycle is one of the most efficient, environmentally-friendly modes of transportation, even centuries after its creation. Still though, there's no lack of innovation happening when it comes to bike. The latest example of this is the Alfa: a 20-pound bike made primarily of cardboard which is capable of holding nearly 500 pounds. Oh, and it only costs $10 to make.
According to .CoDesign, the belt-driven design of the bike makes it a maintenance-free ride, and could even be adapted to house an electric motor. In the works for more than three years, inventor Izhar Gafni is still in the process of raising funds for production, but its an idea so good, it'd be a shame for it not to become reality. [NewsGeek via No Camels via DesignTaxi via .CoDesign]