This “Rat Royce,” as is painted on the door, looks like the offspring of a Formula 1 car and the evil big rig from Steven Spielberg’s Duel. Instead of a V-6 hybrid powertrain like modern F1 cars, however, this custom job features a Caterpillar inline-six diesel aft of the front wheels. The wide stance, dual rear wheels, semi-truck cab with a visor, and roof-mounted horns makes this one imposing truck.