Sir richard branson, the bearded billionaire who founded Virgin Atlantic, is fond of surprises. Next month his airline plans to test-fly an aircraft that is partly powered by biofuels, something most experts thought was years away. From April Sir Richard's countrymen will begin filling their cars with a blend of petrol and bio-fuel, as part of the government's plan to ensure that 5% of Britain's transport runs on fuel made from plants by 2010.
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