Opinions are varied on good old classic American Muscle cars. Some love them for the absurd machismo and straight line speed, while others hate them for their absurd machismo and lack of European-style handling. There is one thing that I'm pretty sure we can all agree on, however: Classic American muscles cars are some of the sexiest-looking cars ever built. Because of that fact, this new Forza 4 trailer, showing all the glorious curves of cars featured in an upcoming Forza 4 DLC pack, counts as hard-core (car?) pornography. Warning: This video is NSFA (not safe for autophiles).