UPON ENTERING GARAGE OF HOME, WHILE PRESSING ON BRAKES PREPARING TO PARK, ENGINE ACCELERATED FORCING CAR TO CRASH INTO A LADDER IN FRONT OF CONCRETE WALL; ALTHOUGH HUSBAND PUSHED FULL FORCE ON BRAKES, THE CAR SEEMED TO RACE FORWARD. NO ONE WAS HURT, FRONT RIGHT BUMPER PLASTIC PANEL POPPED OFF. EARLIER ON SAME DAY, WHILE SLOWING DOWN FOR TRAFFIC, ALTHOUGH I PUSHED ON BRAKES, CAR DID NOT SEEM TO RESPOND. I WAS ABLE TO MAINTAIN CONTROL OF CAR SINCE I WAS TRAVELING AT LOW RATE OF SPEED. *TR