The Miracle of Hot Rod Engineering We don't pretend to be experts in Mustang hot rods, but we still think it's pretty amazing that you can take your $ 54,800 Shelby GT500, hand over $ 39,995 to Shelby American, and drive home from the outfit's facility at Las Vegas Motor Speedway with an 850 - hp car that will blaze through the lights on the quarter - mile and then take you for burgers and fries afterwards.