Yesterday, the Ford Mustang turned 49 years old, and Ford didn’t miss the opportunity to celebrate the one millionth version of the Mustang rolling off the assembly line at the Flat Rock Assembly plant. Production of the Mustang at Flat Rock coincided with the fifth-generation design launching in 2004, and the one millionth car was the car shown above, a 2014 GT convertible painted in Ruby Red.

In total, Ford has sold more than 8.5 million Mustangs since the original car went on sale, but some of the key milestones over the car’s nine years at Flat Rock include the Shelby GT-H, Bullitt, Boss 302 and, of course, the 662-horsepower Shelby GT500. Scroll down for a press release celebrating Flat Rock’s milestone Mustang.

Related GalleryOne Millionth Ford Mustang Built at Flat Rock Assembly

By Jeffrey N. Ross