This one is an enigma. On the one hand, it has all the makings of a scam like NanoFlowcell and their solar and saltwater powered cars. Or, more charitably, the fanciful dream of its founder, as with Elio, DeLorean and Bricklin. However, they are supposedly spending (and will continue to spend) billions of dollars on this venture... and it's bankrolled by a billionaire (and possibly with billions of domestic and foreign government subsidies and investments), so is there really something behind the Wizard's curtain?