VEHICLE COMPLETELY STOPPED IN A LINE OF TRAFFIC. WHILE WAITING TO MOVE ON, WITH MY FOOT ON THE BRAKE,THE ENGINE ALL OF A SUDDEN ROARED AND THE VEHICLE SHOT FORWARD AND HIT THE VEHICLE (APPROXIMATELY 5 TO 7 FEET) IN FRONT OF MY VEHICLE. THE AIR BAGS DID NOT OPEN AND THE HIT TO THE OTHER VEHICLE WAS MORE LIKE A PUNCH. I TRIED TO STOP MY FORWARD THRUST BUT THE BRAKES WOULD NOT HOLD THE VEHICLE. UPON STRIKING THE OTHER VEHICLE THE ENGINE ROAR STOPPED AND EVERYTHING SEEMINGLY RETURNED TO NORMAL. MINOR DAMAGE WAS DONE TO BOTH VEHICLES AND NO ONE WAS REPORTEDLY INJURED. THE POLICE WERE CALLED TO THE SCENE AND AN ACCIDENT REPORT WAS FILED. MY TOYOTA DEALER WAS CALLED FOR ASSISTANCE AND ADVISED ME THAT THEY NEVER HAD SUCH AN EXPERIENCE REPORTED BUT SUGGESTED I BRING THE VEHICLE IN FOR SERVICE. *TR