From its growling engine to its unmistakable body, the Mustang is arguably the most iconic car in American history. Spearheaded by the late Lee Iacocca in the early 1960s and entered into America's imagination in 1964, six generations of Mustangs have since rolled off the line in almost as many decades. Over the years, the brand has had its icons and failures, but one thing has never changed: The Mustang is America's muscle car. And now it seems the Mustang is the last remaining passenger car produced by Ford for North America, according to the American automaker. Here's a roundup of the best of the brand.