WIFE TURNED INTO OUR DRIVEWAY WHICH SLOPES DOWN (10 - 20 DEGREES) AS SHE HAS BEEN DOING FOR THE LAST 20+ YEARS WITH HER FOOT ON THE BRAKE. THE PAVEMENT WAS DRY. THE BRAKES FAILED TO STOPPED THE CAR. SHE VEERED LEFT TO AVOID GOING OVER A 20 FOOT EMBANKMENT AT THE END OF OUR DRIVEWAY AND CRASHED INTO A STONE WALL. BASED ON THE ANGLE OF IMPACT THE CAR ROLLED OVER ONTO ITS ROOF. AIR BAGS DID NOT INFLATE. MY WIFE REMAINED SUSPENDED BY THE SEAT BELT UPSIDE DOWN UNTIL EMERGENCY FORCES ARRIVED. SHE SUSTAINED MULTIPLE BRUISES AND CHEST PAINS ATTRIBUTED TO THE SEAT BELT. IF SHE HAD GONE OVER THE EMBANKMENT ONLY GOD KNOWS WHAT THE EXTENT OF HER INJURIES WOULD HAVE BEEN. NEW TIRES HAD BEEN INSTALLED ON THE CAR (FRONT WHEELS) DURING JUNE 2008 AT WHICH TIME THE FRONT BRAKES WERE ALSO CHECKED FOR WEAR BY AN AUTO MECHANIC. THE CAR WAS "TOTALED" AS A RESULT OF THE ACCIDENT. SUBSEQUENTLY I CHECKED THE BRAKE FLUID IN THE CAR (AFTER THE ACCIDENT); THE BRAKE CYLINDER WAS FULL. FURTHER, THE TOYOTA CAMRY IS EQUIPPED WITH BRAKE WEAR INDICATORS. NO INDICATION (SOUND) OF EXCESS WEAR WAS GIVEN PRIOR TO THE ACCIDENT. MY WIFE IS ADAMANT SHE HAD HER FOOT ON THE BRAKE PEDAL. I SURMISE TWO THINGS COULD HAVE HAPPENED: 1. THE BRAKES FAILED COMPLETELY AND GRAVITY ACCELERATION DOWN THE DRIVEWAY CONTRIBUTED TO THE CAR'S SPEED AND SUBSEQUENT IMPACT; OR 2. THE CAR SURGED DUE TO A FAILURE OF THE ELECTRONIC THROTTLE CONTROL (ETC) IN WHICH APPLICATION OF THE BRAKES WAS INADEQUATE TO