The World’s Most Expensive Ford Mustang Sells At Auction… Smashing The Previous Record! This 1967 Shelby GT500 Super Snake is the most expensive Mustang ever sold at auction. The previous record stood at $1.3 million, set by the same very car when it was sold back in 2013. This one of a kind 1967 Shelby GT500 Super Snake went back up for auction again in January 2019 in Florida, US. Experts predicted the super rare Mustang would fetch around $1 million mark as muscle car enthusiast from across the world gathered to slug it out. The one of one 1967 Shelby GT500 Super Snake smashed the record for the worlds most expensive Mustang after it went for a whopping $2.2 million! The Super Snake is a concept car that derives from the regular 1967 GT500 Mustang, upgraded with a Shelby ‘427’ engine and fitted with the same “bundle of snakes” exhaust system that the used on the champion GT40 power figure, leaving this Mustang with an astonishing 600bhp. With the huge amount of power the top speed of the Super Snake is 170mph. The original plan was to build and sell 50 ‘Super Snakes’, but the concept never got out rolled due to the excessive building price. The cost of the Super Snake on the market each would have been twice the price of a regular GT500.