UPON TAPPING THE BRAKE PEDAL TO DISENGAGE THE CRUISE CONTROL, THE ENGINE SUDDENLY ACCELERATED TO FULL OPEN THROTTLE. UPON APPLICATION WITH BOTH FEET ON THE BRAKE PEDAL, VEHICLE CONTINUED TO BE STUCK IN THE FULL OPEN THROTTLE POSITION. AFTER GOING OFF THE ROAD AND HITTING A CONCRETE WALL, ENGINE WAS STILL WIDE OPEN, VEHICLE COULD NOT BE STOPPED. WAS PROJECTED INTO ONCOMING INTERSTATE TRAFFIC AND AN 18-WHEEL SEMI-TRUCK, COLLIDED WITH ME. THE DODGE IS DEMOLISHED AND I AM LUCKY TO BE ALIVE. *AK