Branson's not even going up in this latest fly round the world effort. He's just got Burt Rutan to build a plane and cover it in Virgin logos, and Steve Fossett is going to fly it around the world without stopping.
http://news.bbc.co.uk/1/hi/sci/tech/3204897.stm
If you remember the Voyager that was flown non-stop by Dick Rutan and Jeana Yeager, then this plane looks like a jet-engined successor.