Air plane - Electric skateboards [The Big Picture]

Electric skateboards are all the rage right now. For some reason they're called hoverboards, although they don't, well...you know. But at last, there's a true hoverboard that rides on air like the one piloted by Marty McFly in Back to the Future Part II (1989). The ArcaBoard's batteries hold enough energy to keep its 36 electric fans running for between 3 and 6 minutes, depending on the rider's weight. A full recharge takes as little as 35 minutes. The US $20,000 deck, from Arca Space Corp. in Las Cruces, N.M., musters enough thrust to ferry a rider weighing 110 kilograms (about 242 pounds) at speeds approaching 20 kilometers per hour (about 12 miles per hour).