After a Model A, the Ford Mustang became the company's most successful car model. The Mustang created a new car class called the pony car having a small rear deck and a giant long hood. It was basically a coupe with many parallels with a sports car. Over the years the Ford Mustang has undergone a number of model redesigns and now it is in its sixth generation. Ford Mustang is so popular that it was featured in many movies making it a cult everyday car. A fanart Ford Mustang car progress bar for YouTube.