1968 Porsche 911S Targa Sportomatic

Unable to satisfactorily engineer a 911 convertible, Porsche developed the Targa, a novel body type that offered open-air motoring without sacrificing structural rigidity. Targa's Sportomatic manual transmission - extremely rare in a Targa - permits shifting without a clutch, a feature Porsche expected to resonate with American buyers.

Courtesy of Alan and Lisa Grant