From it growling engine to its unmistakable body, the Mustang is arguably the most iconic car in American history. Six generations of Mustangs have rolled off the line in almost as many decades since the first pony car entered America's imagination in 1964. 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 will be 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.