I WAS IN A PARKING LOT AND TURNED MY CAR INTO A PARKING SPACE. AS I SLOWED MY CAR TO BRING IT TO A STOP, APPLYING THE BRAKE, THE CAR ACCELERATED ON ITS OWN AND CRASHED INTO A RAILING AT THE HEAD OF THE PARKING SPACE. ALTHOUGH I PUSHED THE BRAKE ALL THE WAY TO TO FLOOR, I COULD NOT STOP THE CAR. THE CAR HIT AT SUCH A SPEED THAT IT BROKE A SOLID WOOD RAILING AT THE FRONT OF THE PARKING SPACE. MY CAR WAS DECLARED A TOTAL LOSS BY MY INSURANCE COMPANY BECAUSE OF THE DAMAGE. IT SEEMED TO ME THE CAR ACCELERATED ON ITS OWN AND THE BRAKE WAS NONFUNCTIONAL. I COULD NOT STOP THE CAR. I HAD TWO RELATED INCIDENTS PRIOR TO THIS CRASH. THE FIRST, I REAR-ENDED ANOTHER VEHICLE WHEN APPLYING THE BRAKE TO STOP AT A TRAFFIC LIGHT. AGAIN, THE CAR ACCELERATED AND THE BRAKE WOULD NOT STOP IT. EVEN WITH THE BRAKE FULLY PRESSED, THE CAR HIT THE OTHER VEHICLE, BOUNCED BACKWARD, CONTINUED TO ACCELERATE AND HIT THE CAR AGAIN BEFORE COMING TO A STOP. SECONDLY, ONE TIME I NOTICED WHEN APPLYING THE BRAKE TO MAKE A SHARP RIGHT TURN, THE CAR LURCHED FORWARD. THIS DID NOT RESULT IN A CRASH.