Goodyear Inflatable Plane
In the 1950s, Goodyear found themselves bored with tires and blimps and designed an inflatable, flyable aircraft. While the prototype handled itself little better than a powered glider, Goodyear tried hard to market the plane to the US Army. When the military found the powered balloon rather less than up to front-line service standards, Goodyear tried their best to market the plane to civilian hobbyists, with little success.