The Aston Martin DB6 MkII Volante was given to him by his mother Queen Elizabeth II on his 21st birthday.
Finished in Seychelles Blue, the vehicle remains in its original condition, with some sustainable updates. In 2008, he asked Aston Martin to convert it to run on bioethanol, given his stance on environmental issues.
The engine is powered by bio-ethanol made from wine waste and whey, and blended with 15 per cent unleaded petrol.
