In 1963, New York inventor Einar Einarsson quietly patented a flying car.

The patent abstract is only two pages long. “The car, after traveling on land, may be easily converted for air travel by removing the stabilizers and wings and placing them in position on the outside of the vehicle. The road wheels may be raised and the propellers are now in position for operation. By suitable adjustment of the wings the car can take off, and when in the air the wings are further adjusted for cruising speed.”

I wonder if he built a prototype …