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Bicycle
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A bicycle, also called a pedal cycle, bike, push-bike or cycle, is a human-powered or motor-assisted, pedal-driven, single-track vehicle, with two wheels attached to a frame, one behind the other. A bicycle rider is called a cyclist, or bicyclist.... Wikipedia
Invented: 19th century
Inventor: Karl von Drais, Kirkpatrick MacMillan
Application: Transportation
Classification: Vehicle
Components: Frame, wheels, tires, saddle, handlebar, pedals, drivetrain
Fuel source: Human-power (and/or motor-power)
Wheels: 2