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Porsche 904 GTS (1964)

Estimated Value: In excess of $1 million
Units Built: 100
Speed: 135 mph

"Porsche became the 'Giant Killer' in international racing with Spyders," Raskin said.

The new 904 was the first Porsche built of fiberglass. It was also "street able" with headlights, wipers and a trunk with a spare tire. It was a very unique design — many of these came to the United States to be raced successfully in the mid-1960s.

Source: Lee Raskin | Photo: Susann Miller