In 2007, GM commissioned Pratt and Miller to build a street-legal version of the GT1 C6R racecar for Jay Leno. Seven were eventually built and this particular model , #C6RS003, is arguably the rarest of the lot as it was built for P&M's photographer who requested a host of unique features. Built from the ground up, the C6RS is based on a new C6-gen Z06 chassis, wrapped in an all carbon-fiber body, and powered by a Katech Aluminum 8.2-liter V8 engine rated at 600 hp and 600 lb-ft of torque.

A stock C6RS also came with a K&N air filter, T-56 six-speed box, Corsa cat-back performance exhaust, Brembo brakes, a 40mm height-adjustable suspension and BBS center-nut forged alloys. This particular model, however, was a year in the making and eventually cost the owner $330,000. Unique features that significantly bumped up the price includes a $31k Caavaggio interior that boasts exposed and polished carbon-fiber seats, a 6-point safety harness, and a hand-stitched leather-wrapped integrated roll cage, competition center lock wheel nuts, a deployable rear spoiler, carbon-fiber engine valve covers, and an integrated radar detector system.

Other unique touches include a high-end Panasonic sound system, upgraded Katech camshafts, and yellow tinted headlights and fog lamps. Located in Orange County, California, this one-off Pratt and Miller C6RS with less than 4,000 miles on the clock will be up for auction on eBay until May 19. As of writing a bid of $110,100 has failed to meet the reserve.