The iconic Jeep has been continuously improved since its introduction with the military in World War II, keeping abreast with changing times and managing to stay relevant through the decades. Much has changed, but at its core the Jeep is the same all-terrain, go anywhere machine that carried the Allies deep into Axis territory. The Rubicon, named after the Rubicon Trail in the Sierra Nevada Range, had special features such as front and rear Dana 44 axles, Rock-Trac four-wheel drive, and special alloy wheels.