The Blue Oval is apparently considering a four-door Mustang, which would launch in the 2029 model year, and dealers were just given a first look at an early prototype of the thing at a meeting in Las Vegas. Folks at the meeting in Vegas — who spoke only on the condition of anonymity likened its size and design to something resembling the Porsche Panamera, according to Automotive News. It's not totally clear what Ford will call the four-door 'Stang, but if internal codenames and trademarks are anything to go by, Mach 4 seems like it could be a good bet. It'll be in keeping with the Mustang Mach-E name you all know and love for the all-electric crossover. The Panamera tidbit is interesting because it makes me think the four-door Mustang could be a liftback rather than a traditional sedan, which would make it easier to take on the Dodge Charger and its enormous trunk opening.