The highly anticipated 2021 Ford Mustang Mach-E just broke cover as the company's first competitive EV and the first production electric vehicle to sport the Mustang name. The big news is that the Mach-E will be offered in a high-performance trim as well. It will be called the GT, it will generate well in excess of 400 horsepower, and hit 60 mph from a standing start in "the mid-three-second range." This means it will be quicker than the Mustang GT. Is the muscle car becoming irrelevant now that the Mustang is also a high-performance electric SUV?