VEHICLE DRIVING ON INTERSTATE WHEN A VIBRATION WAS FELT THROUGH THE STEERING WHEEL, THEN THE VEHICLE STARTED LOSE POWER. GEAR SHIFT STILL IN DRIVE ENGINE STILL RUNNING AND COASTED TO A STOP ON SIDE OF HIGHWAY. VEHICLE WAS REAR ENDED FOUND OUT THAT THE LEFT DRIVE AXLE HAD BECOME DISCONNECTED AT THE TRANSMISSION END. WHEN THIS HAPPENS THE SV HAS NO WAY TO MAINTAIN A SAFE SPEED.-++++++*DT*DT*DT*JB*JB*DT*JB*DT