by 
OK, how cool is this? Based on an 1869 design originally conceived in Marseilles, France, the Motorized Monocycle ($13,000) can propel a single passenger at speeds up to 25 mph. The monocycle easily navigates riding terrain from smooth pavement to grassy fields. Manufactured in the Netherlands, this kick-butt machine can keep you rolling for up to two hours on a measly 1/2 gallon of gasoline.