In the 1930s, people thought ... would be a major form of transportation.
A well-known businessman said ... were just a fad.
H.G. Wells said that we would never have ...
Popular Mechanicsthought we would have personal ... in our garages.
French artists imagined firefighters with ...
Supersonic ... didn’t succeed because they were too loud and expensive.
Airships
Wings
Submarines
Automobiles
Airplanes
Helicopters