WHILE PREPARING TO BACK OUT OF A PARKING SPACE, MY 2002 GRAND CHEROKEE OVERLAND SUDDENLY ACCELERATED FORWARD AT A FULL RATE OF ACCELERATION. MY RIGHT FOOT WAS PUSHING ON THE BRAKE PEDAL, NOT THE THROTTLE PEDAL. THE VEHICLE CONTINUED TO ACCELERATE FOR ABOUT 2-3 CAR LENGTHS UNTIL IT STRUCK A BUILDING, CAUSING BOTH FRONT AIR BAGS TO DEPLOY. I WAS PUSHING ON THE BRAKE PEDAL SO HARD, THAT ONE OF THE BONES IN MY FOOT BROKE WHEN THE VEHICLE STRUCK THE BUILDING. I PREVIOUSLY OWNED A 2000 GRAND CHEROKEE AND TWO CHEROKEES, SO I AM VERY FAMILIAR WITH THE BRAKE AND THROTTLE PEDAL LOCATIONS ON THESE VEHICLES. *JB