A four-door Mustang coupe appears to be closer than ever to becoming a reality, because as of Tuesday, #Ford has officially filed to trademark the name “Mach 4” for a motor vehicle. While automakers file trademarks all the time, this one — initially spotted by Ford Authority — has a little more validity to it, thanks to a report from Automotive News last summer which said Ford showed dealers a rendering of a four-door Mustang with a coupe-like body named Mach 4 at a conference in Las Vegas. Do you think a four-door Mustang is a bad idea? Tap the link in our bio for the full details. #FordMustang #fourdoor #Mustang #sportssedan #carsofinstagram #cargram #roadandtrack