This invention is a user-propelled riding toy. A platform on which a user
stands is supported by at least two wheels; and a geartrain mounts to the
wheels. The geartrain is adapted to receive a downward force from the
pedals, and translate a portion of the downward force into a rotational
force on the wheels. The geartrain also provides an upward return force
acting on the pedal. The platform is propelled forward direction by the
rotational force on the wheels. When one pedal is pressed down, the other
pedal will be raised simultaneously.