“You can stop any plane on as small a space as an autogyro if you are willing to sacrifice the speed of your ship to do it. A little plane called the Doodle Bug has been constructed at Washington, D.C. which runs at a comparatively slow speed and lands with as short a run as the flying-windmill. The big advantage of the airplane is speed, and an autogyro with top speed 5 of 80 miles an hour will never replace a plane with cruising speed of 150 miles an hour in general popularity and usefulness.”