The 1959 Curtiss-Wright Model 2500 Air-Car was an offshoot of research and development for military usage. They described the Air-Car as a completely new method of transportation that successfully met the needs for a vehicle that could travel over unobstructed land, across water or over surfaces that will not support wheeled vehicles. Because of its versatility, the Air-Car opened up a new era in the transportation of passengers and cargo in a wide variety of industrial uses.
Source: The Old Motor