WHILE LEAVING PARKING LOT IT WAS VERY DARK AS LIGHTS WERE OUT IN FRONT OF AND BEHIND ME AND IT WAS DIFFICULT TO SEE BEHIND ME. I PROCEEDED SLOWLY IN REVERSE AND LIGHTLY HIT THE CEMENT BASE OF LIGHT BEHIND ME. I FELT THE IMPACT ON BACK RIGHT . I IMMEDIATELY PLACED MY RIGHT FOOT ON THE BRAKE. THE CAR WAS STOPPED. I THEN TRIED TO PUT THE CAR INTO DRIVE WHILE DOING THIS I NOTICED THAT THE ENGINE WAS LOUD AND REVVING UP SPEED AND ACTUALLY MOVING WHILE I HAD MY RIGHT FOOT ON THE BRAKE AND NO FOOT ON THE GAS. MY FIRST THOUGHT WAS THAT FROM THE REVVING NOISE THE ACCELERATOR PEDAL WAS STUCK. I CHECKED THIS WITH MY RIGHT FOOT AND FELT THAT THE GAS PEDAL WAS UP AND NOT DOWN AS IT SOUNDED. I NEXT PUT THE CAR INTO PARK, WE CONTINUED TO MOVE AT AN ACCELERATED PACE. I THEN PLACED BOTH MY FEET ON THE BRAKE PEDAL. I USED AS MUCH FORCE AS I COULD, I DID THIS BY STEPPING ON THE BRAKE WITH BOTH FEET AND PULLING UP ON THE STEERING WHEEL TO GIVE ME MORE FORCE AND PRESSURE. THE CAR DID NOT SLOW DOWN , DID NOT SKID , SHOWED NO SIGNS OF SLOWING DOWN. I NEXT PULLED THE EMERGENCY BRAKE AS HARD AS I COULD WITH MY RIGHT HAND, STILL THE CAR DID NOT SLOW DOWN. THERE WAS A DUMPSTER AHEAD TO MY LEFT, A LARGE PARKING LOT LIGHT WITH A CEMENT BASE TO THE RIGHT AND A FENCE BETWEEN THEM. I AIMED THE CAR BETWEEN THE DUMPSTER AND LIGHT. THE CAR WAS STILL ACCELERATING, NO SIGNS OF SLOWING DOWN. I MADE THE DECISION TO GO OVER THE CURB HIT THE FENCE IN THE HOPES THAT THIS WOULD SLOW THE CAR DOWN IN ORDE