Porsche developed the 917/30 Can-Am Spyder in collaboration with race team owner Roger Penske. With its turbocharged 5.4-liter 12-cylinder engine capable of producing more than 1,200 horsepower, the 917/30 could go from zero to 60 miles an hour in 2.1 seconds and had a top speed of over 240 miles an hour.

Although he did take this car on the track, Seinfeld never drove it to its full potential. "The car's crazy," he said in Gooding's catalog. "I'm not."