AS I TRIED TO POSITION MYSELF TO ENTER A PARKING LOT. I CHANGED GEAR TO REVERSE, TO BACK UP. I SWITCHED GEAR AGAIN TO DRIVE. I PROCEED TO THE LOT AND THAT'S WHEN THE CAR MOVED AT A VERY HIGH SPEED. I HIT THE BRAKE, BUT HAD BREAK FAILURE . I COULD NOT STOP THE CAR, IN THE PROCESS (7) OTHER CARS WERE HIT... UNTIL THE CAR WAS STOPPED BY ANOTHER CAR THAT WAS HIT.