Pat Clancy's unique 6 wheeled Indy race car, the only 6 wheeler to ever race at Indy

In 1948, at the Indianapolis 500, a six-wheeled car built by Pat Clancy, and driven by Billy DeVore powered its way to 12th position overall. The four rear wheels of the car were driven by two axles connected by a universal joint. The six-wheel Indy car only lasted one race, in 1949 it was converted back to a conventional 4-wheel racer. It remains the only six-wheel car to ever race at the Indianapolis 500

Found on http://www.diseno-art.com/news_content/2014/05/top-10-unusual-race-cars/ via http://blog.hemmings.com/index.php/2014/05/17/four-links-bruce-meyers-car-engined-bikes-lotus-carlton-maserati-museum/