The Kawasaki Ninja H2R is a closed course riding use only model and is not manufactured for use on public roads, streets or highways. The "supercharged supersport" class motorcycle was manufactured by Kawasaki Heavy Industries and features a variable-speed centrifugal-type supercharger. With a claimed 300 horsepower (220 kW), it has 50% more power than the fastest street-legal motorcycles.
First seen in the 1880s, it was labeled the safety bicycle. It featured equally sized wheels, a chain drive to the rear wheel, pneumatic tires, and a front wheel with significant castor. Susan B. Anthony, the American feminist, called it the first bicycle that was suitable for women and labeled it the “freedom machine.”