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.
Their British-designed and built craft, named Greenbird, is carbon-neutral.
Mr Vince said the team were following in the footsteps of Donald Campbell who used several cars and boats named Bluebird to break speed records.
"Campbell did it with the prevalent fuel of the day - we're doing it with the prevalent fuel of tomorrow," he said.
"Donald Campbell had his massive cubic capacity engines and energy dense fossil fuels - we have just the wind.
"But the wind will still be here in 50 or 100 years time - the age of renewables has been a long time coming (back) but will endure."
The Greenbird is a land yacht which relies on solid sails like an aircraft wing.
Man City Manager - English Premiershipsimonnewcombe@googlemail.com