I WAS ON THE FREEWAY TRAVELING APPROPRIATELY 65 MPH. THE VEHICLE TO THE RIGHT AND IN FRONT OF ME SUDDENLY SWERVED IN TO MY LANE AND BRAKED HARD IN FRONT OF ME. WITH NO PLACE TO GO ON EITHER SIDE OF ME, I WAS FORCED TO BRAKE FAST AND HARD. THE ABS KICKED IN AS EXPECTED BUT ONCE I HAD DECELERATED TO A POINT WHERE I KNEW A COLLISION WAS NOT IMMINENT AND TOOK MY FOOT OFF THE BRAKE, THE CAR CONTINUED BREAKING VERY HARD. IT TOOK THE BETTER PART OF A SECOND WITH MY FOOT NOW COMPLETELY OFF THE BRAKE BEFORE THE BRAKES ACTUALLY RELEASED. IN THIS TIME, THE CAR BEHIND ME WAS NOT ABLE TO STOP AND HIT ME HARD, CAUSING INJURY TO TWO PEOPLE IN THE CAR WHO WERE NOT BELTED IN. THIS ACCIDENT WOULD HAVE BEEN AVOIDABLE IF THE LEAF HAD NOT FAILED TO DECREASE THE BRAKING EFFORT WHEN I RELEASED PRESSURE AND THEN ULTIMATELY TOOK MY FOOT COMPLETELY OFF THE BRAKE PEDAL. IT FELT AS IF SOMETHING LIKE THE BRAKE ASSIST FUNCTION WAS MALFUNCTIONING... *TR