In 2010, an advanced aircraft engineer at NASA’s Langley Research Center named Mark Moore published a white paper outlining the feasibility of electric aircrafts that could take off and land like helicopters but were smaller and quieter. The vehicles would be capable of providing a speedy alternative to the dreary morning commute.

Moore’s research (PDF) into so-called VTOL—short for vertical takeoff and landing, or more colloquially, flying cars—inspired at least one billionaire technologist. After reading the white paper, Google co-founder Larry Page secretly started and financed two Silicon Valley startups, Zee Aero and Kitty Hawk, to develop the technology, Bloomberg Businessweek reported last summer. READ MORE