Ford's Flat Rock Assembly Plant employees cheer Wednesday as the millionth Ford Mustang is driven off the assembly line in Flat Rock, Mich. A million Mustangs have rolled off the Flat Rock assembly since production moved there in 2004. The car was built at Ford's Rouge factory for four decades before moving to Flat Rock in 2004.
The one millionth Ford Mustang to be built at the Flat Rock (Mich.) Assembly Plant is driven off the assembly line as workers cheer. Production of the sports car was moved in 2004 to Flat Rock, which is about 35 miles northeast of Toledo. From 1964 to 2004, Mustangs were built in Dearborn, Mich.