September 13, 2015. Last week, a patent application that the automaker initially filed with the U.S. Patent Office in March 2014 was discovered. The application describes "an aerocar including a stackable wing and methods for morphing the stackable wing…atop the aerocar," and includes a schematic showing a wing extending upward from the roof.

The Toyota proposal, patent application 20150246720, doesn't show how its aerocar would generate the thrust needed to propel it through the air.Toyota hasn't said anything more to indicate how serious it is about building a flying car.