Flying cars, transparent cloaks, technology which can read minds and games played by brain waves - the stuff of fiction, surely? Not so, these seemingly far-fetched inventions - and more - are now reality. What lies beneath the cloak For a vision of what the future holds, thousands of nay-sayers and believers alike have got an up close and personal glimpse at NextFest, an expo in San Francisco organised by the technology magazine, Wired. "This is a city that is always looking at what is next," says editor-in-chief Chris Anderson. "We have brought the most innovative minds and extraordinary technologies...