Some more video footage of the 2015 S550 Ford Mustang has hit the web. This time we get front to back, side to side video footage of the 2015 Mustang in action. You get to hear the exhaust note from the 2015 Mustang as well. Take a close listen, are they run on the turbocharged four cylinder or the 450 horsepower V8? Think Mustang enthusiasts are getting tired of the full-body camo and ready for the full version of the new American muscle car.