Despite the low flight in the video, this project is hardly haphazard experimentation. The vehicle makers document the math behind the decision. The vehicle uses 16 rotors, arranged in clusters of four, powered by electric engines. A lightweight passenger (no heavier than 134 lbs) sits in the center. Autonomous drone flight software steers the craft. Like other human-lifting multirotors, it's a work in progress, promising short flights for light people willing to overcome their fear of nearby spinning blades.