APPROACHING A REDLIGHT AT A HIGHWAY INTERSECTION, MY SON PRESSED HIS FOOT DOWN ON ON THE BRAKE AND THE BRAKES FAILED. THE PEDAL WENT ALL THE WAY TO THE FLOOR AND DID NOT WORK AT ALL AND RESULTED IN AN ACCIDENT THAT DESTROYED THE CAR AND INJURED THE OCCUPANTS OF THE CAR HE STRUCK. THE CAR WAS PURCHASED USED. THE PREVIOUS OWNER HAD THE BRAKES COMPLETELY REPAIRED WHEN THE SAME THING HAD HAPPENED WHILE BRAKING. I WAS NOT AWARE OF THE SPECIFICS OF THE BRAKE REPAIR UNTIL AFTER THE ACCIDENT WHEN I INQUIRED AS TO WHY HE HAD REPLACED THE BRAKE BOOSTER PRIOR TO MY PURCHASE. INTERNET SEARCHES AFTER THE ACCIDENT SEEMED TO INDICATE THAT THIS HAPPENED WITH SOME FREQUENCY TO OTHERS AND I WANTED TO MAKE SURE I LET SOMEONE KNOW.