356 America Roadster

This isn't technically a Speedster, but the Type 540 (Typ 540 K/9-1 to be very precise) - known more commonly as the America Roadster - started the idea. The American Roadster was the direct predecessor of the Speedster. U.S. importer Max Hoffman convinced Porsche it needed a lightweight convertible to compete. It only had an emergency folding roof and could keep up with larger sports cars of the era. But the production methods used to create the America Roadster’s aluminum body proved to be too expensive, and in 1952 Porsche built only 21 units before its discontinuation in 1953.