The third design, the Firebird III, was built in 1958 and first shown at Motorama in 1959. It is another extravagant prototype with titanium skin, and no fewer than seven short wings and tail fins that were tested extensively in a wind tunnel. It is a two-seater powered by a 225 hp (168 kW) Whirlfire GT-305 gas turbine engine, and a two cylinder 10 hp (7.5 kW) gasoline engine to run all the accessories. Its exterior design features a double…