WindWheeler: A wind-powered vehicle.

The WindWheeler is a recumbent quad or Velomobile that is not only powered by human and electrical power but is also wind-powered by means of a wing sail. At wind propulsion, the maximum speed is controlled by using proportional regenerative braking (Cycle Analyst combined with the Baserunner controller), so you never go faster than the maximum speed and at the same time, you regenerate wind power to recharge the battery.