The year was 1973, and maverick racer Roger Penske had an idea. He commissioned Porsche to build him 15 identical 911 Carrera 3.0 RSRs, each one in a unique shade, and then created the International Race of Champions – IROC for short – comprised of F1, NASCAR, Can-Am, and IndyCar stars at their peak to come together in equal equipment and see just who was best. Four races were run in total between 73-74, with some of the biggest names in the history of motorsport competing wheel-to-wheel in the vividly-toned 911s. Names like Denny Hulme, Richard Petty, Peter Revson, and upstart Mark Donohue piloted against Formula 1 1972 champion Emerson Fittipaldi, who drove the Sahara Beige car you see here. This chassis went on to be raced and modified by a few subsequent owners, and was restored back to its original configuration in the mid 2000s. Now, it can be yours – for a price.