Ford Shelby GT500Ford Shelby GT500 : 2011 Ford Shelby GT500 achieved the increase in fuel economy through a combination of weight savings from the use of an all-aluminum engine block, improved body and undercarriage aerodynamics and the addition of Electric Power Assisted Steering and also now comes with standard HID headlamps, options MyKey technology, an integrated spotter mirror and fold-down rear headrests for maximum rearward visibility.