SECOND ACCIDENT CAUSED BY BRAKE FAILURE WITH ACCELERATION. 2008 PRIUS IN STOP AND GO TRAFFIC DRIVING IN BATTERY (BRAKE)MODE ABOUT 10-15 MPH. CAR IN FRONT SLOWED DOWN, I HIT THE BRAKE AND THE CAR ACCELERATED SLIGHTLY. I LOOK TO BE SURE MY FOOT WAS ON THE BRAKE PEDAL AND IT WAS AND THEN REAR ENDED THE CAR IN FRONT. CAR IN FRONT MOVE FORWARD BUT PRIUS WOULDN'T STOP AND STARTED TO ACCELERATE AGAIN SO I PUSHED ON THE PARKING BRAKE WITH MY LEFT FOOT AND SLOWED IT DOWN FOR THE SECOND IMPACT. CAR IN FRONT THEN DROVE SLOWLY TO A PARKING LOT AND THE PRIUS KEPT MOVING SO I DROVE IT INTO THE PARKING LOT AND WHEN IT SLOWED GOING UP THE RAMP I PUSHED THE PARKING BUTTON STOPPING THE CAR. I THEN RESTARTED IT AND RELEASED THE PARKING BRAKE TO MOVE FURTHER INTO THE PARKING LOT. 4 PEOPLE INJURED, 3 SERIOUSLY. A SIMILAR INCIDENT OCCURRED 29 SEPTEMBER 2008 WHEN DRIVING ON CRUISE CONTROL AT 26 MPH THE PRIUS SUDDENLY TURNED LEFT HITTING A PARKED CAR. THE VIDEO SHOWS I WAS TRYING TO COUNTER STEER HARD RIGHT. SKID MARKS SHOWED THE LEFT FRONT WHEEL STOPPED AND THE CAR PIVOTED ON IT WITH ACCELERATION MARKS FROM THE RIGHT FRONT TIRE. *TR