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Because there were only 1500 of them ever made, the 1973 Porsche 911 Carrera RS 2.7 is estimated to be worth just under $1 million dollars. When you want to get someone racing in a million dollar car, who do you call but two men with million dollar car collections themselves? Jay Leno teams up with Grey’s Anatomy star and professional race car driver Patrick Dempsey to show off some of the rarest Porsches they could get their hands on and lap them around California’s famed Willow Springs race track.