Lake Lefroy here.

Article here.

Two British men are preparing an attempt on the world land-speed record for a wind-powered vehicle. Eco-entrepreneur Dale Vince and engineer Richard Jenkins will try to beat the record of 116mph (187kmph) at Lake LeFroy in Western Australia.

In the same way that air flows over an aircraft's horizontal wing and pushes the aircraft up, the flow of air over the Greenbird's vertical sail pushes the vehicle forward. Greenbird in Australia Wet weather has held up the land-speed record attempt

This force enables the craft to travel between four to six times the real wind speed, depending on the surface traction.