General Motors Firebird 1
Is it a plane? Is it a car? Actually it's both rolled into one bizarre creation. The General Motors Firebird 1 comprises wheels strapped to what looks incredibly like a jet fighter with stubby wings. Don't laugh back there - this was cutting edge back in 1953.
As what can only be described as a Thunderbirds toy, the Firebird 1 was actually created to see whether a gas turbine engine would be viable in the cars of the future. Obviously it wasn't, but the 370hp experiment certainly raises a smile, even though it never took off.