The Mustang GTD recently became the fastest American car around the Nürburgring Nordschleife.The GTD achieved a lap time of 6 minutes and 57.685 seconds, making it the fifth fastest stock production sports car.The car features carbon fiber bodywork, a hydraulic Drag Reduction System, and an 815 horsepower supercharged 5.2-liter V8 engine.Ford plans to return to the Nürburgring to set an even faster lap time in the future.