At this week’s 2010 Sao Paulo Auto Show in Brazil Fiat rolled out a new concept car previewing a possible solution for efficient urban mobility. Such concepts are nothing new but where Fiat’s latest design is unique is in the fact that it does not entirely belong to Fiat but also to people just like you and I.

The new concept car is the Fiat Mio and it’s the result of an online collaboration among thousands of consumers and experts. More than 17,000 people registered at a special website set up by Fiat where they could contribute more than 10,000 ideas and suggestions. Topic ideas included choice of materials and features, as well as new methods of manufacturing.

The Mio is actually the third concept car in a line that includes the previous FCC Adventure and FCC Bugster. It measures 98 inches in length, which means it’s about 6 inches shorter than the already puny Smart Fortwo.

Green elements of the concept include its sustainable eco-friendly materials, proposed zero-emissions electric drive system and its ability to be used in car sharing programs where a single car can satisfy the mobility needs of several different drivers.