ACCELERATING ON AN ON-RAMP TO GO ON THE FREEWAY, A MASSIVE BUMP WAS FELT. I LOST CONTROL OF THE CAR USING MOMENTUM AND DIFFICULT STEERING TO GET ME TO THE SIDE OF THE FREEWAY. I DISCOVERED THE WHEEL WAS DISENGAGED AND WAS ONLY ATTACHED BY THE BRAKE LINE. MECHANIC INSPECTED THE DAMAGE AND SAID THE BALL JOINT BROKE OFF CAUSING THE WHEEL TO BE DISENGAGED. *TR