Biquattro is a prototype electric bike driven by the idea that one should be able to exercise full mobility in a various contexts – in cities, through traffic lights, and in the park. Biquattro can be driven on two wheels or, as needed for shopping, on three wheels. The rear wheel can be spilt, transforming the bike into a tricycle with a storage unit. A volume of up to 150 litres fits into this rear storage space – more than the average trunk size of some small cars. On two wheels, Biquattro can be ridden like a bicycle making it easily manageable in city traffic. Red Doth Design Award – 2009 winner.