Because Richard Branson is expecting Peak Oil within 6 years, he is busy developing alternative fuels
He'll have to do better than his latest "exploits" re:
towing aircraft all the way instead of taxi under power (nose gear gets a bit stressed)
that "green" flight which only actually used 5% biofuel....
http://www.timesonline.co.uk/tol/new...cle3516551.ece (I assume it's accurate)