My old boss invented the Hyperloop before Elon musk had thought of it

I worked near Cheltenham for Andy Marks and his wife Brenda at Skyscan aerial photography 20 years ago. We have kept in touch, and he recently told me about an upcoming fascinating announcement by Elon Musk, the founder of so many interesting venture including PayPal, SpaceX and Tesla cars. Elon's next project is to forward the cause of the Hyperloop tube transport project, which will allow people to travel from Los Angeles to San Francisco at 800 mph. The thing is Andy has been working on this idea in his portacabin (shed !) for over a decade, and he has overcome many of the practical problems [...]