Here is a little movie for the Mustang fanatics, courtesy of Blue Oval News. It shows Carol Shelby flogging a GT500 prototype at Ford's Dearborn Proving Grounds. The video resolution is poor, but be sure to listen to the sounds.
You may notice a big red button sticking out of the center console above the radio. That is an emergency button, which will kill the engine. These are sometimes installed in prototype vehicles, in case the "drive-by-wire" electronic throttle fails.