Top Gear star Richard Hammond travels across the US for his ultimate motor challenge, seeking out and driving America's toughest and most extraordinary vehicles. These awesomely powerful machines have very specific jobs to do - and operating them is no easy feat, even for a confirmed motor nut like Hammond! No two are the same, so before getting behind the wheel, joystick or control panel of these outlandish vehicles Hammond is taught how to handle them by the people who operate them on a daily basis. Over the course of this six-part series he trains with fire-fighters for his encounter with the supercharged Striker fire engine, learns to fire and manoeuvre the mighty Abrams M1A1 tank, heads for logging country to master the tree-devouring dangle-head processor and conquers huge specialist cranes on demolition sites and oil rig salvage barges.