75-year-old Gennai Yanagisawa, create one-man aircraft (GEN H-4). Maximum altitude of the GEN H-4 can is 1000 meters at a top speed of 90 km/hr (59 mph) for up to 30 minutes. It is weight 75kg (165-pound). Controlling the GEN H-4 is very easy. If you want to go forward, you would pull the control bar toward you. If you want to go to the right, you would move it to left, and want to go left, move it to right. The rise and descent are controlled by the throttle. It has four twin cylinder engines and can remain in the air even if two of the engines of malfunction. However, they have attached a parachute above the mast just in case. for now five GEN H-4s have been sold in Japan and two in the U.S. for recreational use.