5. General Motors Firebird XP-21
The Firebird XP-21 doesn’t have the capability to function as a dual car-jet — even though it looks like it can explode into the sky on a moment’s notice. This car was the first turbine-powered automobile in the history of the United States. Crazily enough, the car even expels jet exhaust registering at over 1,000 degrees-Fahrenheit. The cockpit-like cabin was able to fit two people. The fin on the back of the car — coupled with the flanking wings — made this car extremely quick when bombing down roads.
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