1. Curtiss Auto-Plane
Curtiss AutoPlane was introduced by aviator Glenn Curtiss in 1917 at New York Pan-American Aeronautical Exposition. It is a Three seater plane made up of an aluminium body and plastic windows. The front engine gives power to the rear propeller through a driveshaft and set of pulleys. The tri-plane wings are removable.
2. Henry Dreyfuss Convaircar
Henry Dreyfuss Convaircar was introduced around the year 1947. Famous Industrial designer Dreyfuss was the man behind this technical artwork. It is a four-seater flying car with attached engine and wing to the roof. It has a wingspan of 35 foot along with a 119 hp Lycoming aircraft engine. During a test flight, the plane got crashed which killed the pilot and doomed all the dream of Dreyfuss.
3. Curtiss Wright VZ-7
Curtiss Wright VZ-7 was the result of the first attempt of US military to enter into flying car industry. The design of the aircraft was based on Vertical Take Off and Landing, VTOL system. It has four upright propellers positioned behind the pilot seat. The direction and speed of flying is done by increasing or decreasing the propeller's speed. Since the propellers were open and could result as a death trap so in 1960 U.S army cancelled the project.
4. Jess Dixon’s Flying Auto
This legendary car was built around 1940. The look of the machine was just like a roadable helicopter or we can say like Gyrocopter having two overhead blades in opposite directions. Foot pedals control the tail vane at backward side which helps in turning while flying in air. It was powered by the 40 hp engine with an overhead blade spinning in two opposite directions. The speed of this car was around 100 miles per hour.
5. Piasecki AirGeep
After cancelling the VZ-7 project US army turned towards a different prototype known as Piasecki AirGeep. Since at that time helicopters were already been developed and popular so the U.S Army want to develop machine similar to helicopter but small in size as compared to it and the one which needs very less training.
Seven different versions were launched, all having same basic design that is two vertical propellers, one at front and one at rear. The pilot seat was positioned in the middle of two propellers along with three to four wheels for ground use.
6. Taylor Aerocar
Taylor Aerocar was also known as Aerocar International's Aerocar which was built and designed by Moulton Taylor. It was an roadable aircraft, built and designed by Moulton Taylor in the year 1949 in Longview, Washington. The company launched six different versions but unfortunately all of them failed and hence no production was done. It could be driven on road at speed of 60 miles per hour and it has a airspeed of of 110 miles per hour.
7. Henry Smolinski Mizar
Henry Smolinski Mizar was designed by Advanced Vehicle Engineers company situated in California, in the year 1971. For manufacturing this hybrid monster, Cessna Skymaster was welded to a Ford Pinto. Even though the prototype was proven to be a great success but unfortunately in 1973, it got crashed finally taking its future to an end.
8. Dewey Bryan Autoplane
Dewey Bryan Autoplane is a roadable aircraft which was built by A Buick technician Leland Dewey Bryan in Milford, Michigan.The airplane was having foldable wings and was powered by continental engine having pusher propeller configuration.He built three different models of this metal bodied flying machine.
Bryan successfully drove all the three models at the top speed of 65 mph covering a distance of 1000 miles on road. The second version was also successfuly flown by him for duration of 65 hours. Unfortunately in 1974, he got killed in a crash while taking trial of his third model.
9. Super Sky Cycle
10. Air Mule
Air Mule was designed and developed by an Israeli company known as Urban Aeronautics. It is more like an airborne ambulance rather than a car. The main intention to develop this machine is for carrying out search and rescue missions. It is a completely unmanned vehicle and was operated with the help of remote control.
11. PAL-V One
PAL-V also known as One Personal Air and Land Vehicle ONE, is a roadable aircraft developed by a Dutch company PAL-V International B.V. PAL-V One is a gyrocopter having pusher propeller system which is foldable in nature. This pusher propeller system provides the thrust in the forward direction & a free spinning rotor helps to lift up the aircraft. It has two seats along with a 160 kW gasoline engine. It can reach at a top speed of 180 km/h (112 mph) on road as well as air both.
12. Terrafugia Transition
Terrafugia Transition carried out its first successful flight in 2009 and from then many new changes and improvements have been done. In 2012 it carried out its second test flight which also proved to be of great success. With aerodynamic design and foldable wings, Terrafugia Transition was something which can be called as a Future Car. It has the capability to cover a distance of seventy miles per hour (110 Km/h) on highway and a distance of 115 miles per hour (185 Km/h) while flying in air.