SHORTLY AFTER PURCHASING MY BMW 2009 M3, I NOTICED A RARE BUT VERY DISTURBING PATTERN ON TAKE OFF. I HAD CAR CHECKED IN DEALER AND I WAS TOLD IT WAS LIKELY SECONDARY TO MY DRIVING STYLE! THIS UNCONTROLLED TAKE OFF IS LIKE HI REV AND RAPID ACCELERATION PERIODICALLY ALTERNATING WITH DECELERATION FOR FEW SECONDS. I HAD THIS HAPPEN PROB A DOZEN TIME SO FAR(36K ON CAR). ON DAY OF MY ACCIDENT, IN STOP AND GO TRAFFIC WITH SPEED LESS THAN 5 MILES PER HOUR, CAR LITERALLY WENT OFF ON ME. IT ACCELERATED TO HIT THE CAR IN FRONT AND THEN MANAGED TO PUSH THE CAR INTO ANOTHER 3 CARS IN FRONT, BEFORE IT CAME TO A STALL. I AM NOT SURE IF IT WAS EXACTLY LIKE MY PREVIOUS EPISODES BECAUSE THE DISTANCE BETWEEN MY CAR AND NEXT CAR WAS SHORT. WHAT I AM SURE IS THAT I HAD NO CONTROL ON CAR. *TR