Waterman produced only three copies of the Arrowbile. The roadable plane takes its pilot from home to the runway. Another approach would be to eliminate the runway. The helicopter appeared late in the 1930s. Rotor blades, swinging through the air overhead and generating lift force, perform the job of the airplane's wings.
Helicopters can take off from, and land upon, nearly any flat spot.
They had plenty of applications in military, police, and commercial work. At the end of World War II, the aviation industry was optimistic about the coming consumer demand for millions of personal helicopters. It didn't happen. Helicopters were mechanically complicated, and remained expensive to purchase and to operate. While there are many thousands of personal airplanes in the U.S., the number of helicopters flown by private pilots is far fewer.