Davide Gislaghi, a motorcycle police officer based in Milan, Italy, created this unicycle, or, as he calls it, "velocita" (the Italian word for speed) after reasoning that one wheel would be more efficient than the two on his chopper. It's made of a pneumatic tire and a steel ring with an air-cooled motor to propel it forward and keep it from overheating. The rider balances the vehicle much as one would a motorcycle, so it must not have been too hard for Gislaghi to get accustomed to driving it. Even so, his invention was largely scoffed at - until he drove it from Milan to Rome and showed it off at the National Stadium.
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