Drones Are Turning Into Personal Flying Machines

Ever since he was a kid in Sweden, Peter Ternström wanted to make a sci-fi-style flying machine. In 1983 he saw Return of the Jedi five times and dreamed of zooming through the forest of Endor on a levitating speeder. But as a smart young nerd he quickly realized a hovering vehicle wasn't possible. "There was no propulsion system that worked," he recalls with a sigh. Sure, people had been trying to make personal flying devices for decades--most notably jetpacks.