The Firebird III debuted at Motorama in 1959. The concept car featured a fiberglass body with seven short wings and tail fins. It is a two-seater powered by a 225 hp (168 kW) Whirlfire GT-305 gas turbine engine, with a two-cylinder 10 hp (7.5 kW) gasoline engine to run all the accessories. Its exterior design features a double-bubble canopy and included cruise control, anti-lock brakes, and air conditioning. It also featured air drag brakes similar to those found on aircraft that emerged from flat panels in the bodywork of the car to slow it from high speeds; an "ultra-sonic" key that signaled the doors to open; an automated guidance system to help avoid accidents; and a "no hold" steering system. The car's steering was controlled by the driver by a joystick positioned between the two seats.

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Specifications

GM internal code: XP-73
Wheelbase: 119 in (3,023 mm)
Length: 248.2 in (6,304 mm)
Height: 44.8 in (1,138 mm) (canopy top)
Ground clearance: 5.3 in (135 mm)