[Technical drawing of Lear Vapordyne Indy car]

Technical drawing (photographic reproduction) of the Lear Vapordyne Indy race car, circa 1969-1971.

Caption: "The 'Lear Vapordyne' Championship Car."

Typed on verso: "Championship steam race car built by Lear Motors Corporation and on display at the 13th Annual International Automobile Show in the New York Coliseum. It features a Delta-configuration motor containing 12 pistons in 6 cylinders, delivering power through four-wheel drive. Traditionally, racing has been an excellent component proving ground, and the sleek race car is designed to test Lear Motors' numerous smog-free vapor power systems."