Harley-Davidson. Chevy Volt. Chevy Camaro. Peterbilt. Dodge Viper. Dodge Challenger

Big machines require big muscle and when it comes to sheer, unadulterated grunt, few can do it as well as the U.S. of A. Six of Americas most iconic motoring brands open their doors to reveal a world of precision robotics, dedicated workers and massive shop floors, assembling vehicles that not only look good, but also exude that celebrated American performance power. Take a trip to the land of the free and see what it takes to make the mean machines of the U.S.A.