The world’s best-selling sports car, Ford Mustang, adds to its lineup of performance vehicles for 2021 with the return of the limited-edition Mustang Mach 1 fastback coupe. After ending its previous run in 2004, the Mach 1 is once again back to the Mustang family. It is equipped with a brand-new front end, wings and spoilers from the powerful Shelby GT500,