EE WAS PULLING A 3/4"" WIRE ROPE APPROX. 300' LONG W/312 MANTRIP. THE WIRE ROPE WAS ATTACHED TO THE MANTRIP AT THE CENTER OF REAR BUMPER A CROSSBY CLAMP ON THE OTHER END OF THE ROPE CAGUTH BETW EEN THE VENT DOOR AND THE HINGE POST. THE VEHICLE STOPPED ABRUPTLY THROWING EE INTO STEERING WHEEL. EE S FORWARD BODY MOTION CARRIED HIM PAST THE STEERING WHEEL ON THE GROUND.