"This is the true frontier of transportation," said Marion Blakely, head of the US Federal Aviation Administration, when SpaceShipOne, designed, built and flown by American private citizens, flew into space for the second time in two weeks and won the US$10 million Ansari-X prize. Then Richard Branson of Virgin enterprises made a deal with Mojave Aerospace Venture, the team headed by Burt Rutan and funded by Paul Allen, billionaire co-founder of Microsoft, to develop a fleet of larger spacecraft based on Rutan's design and start commercial space flights in 2007-8. It took us all back to the romantic early years...