I WAS SLOWLY PULLING INTO A PARKING SPOT IN FRONT OF MY APARTMENT BUILDING. AS I REACHED THE FRONT OF THE SPOT (THE END WHERE THE FRONT OF MY CAR WOULD BE), MY 2005 NISSAN ALTIMA BUCKED BACKWARD SLIGHTLY, THEN SUDDENLY ACCELERATED. THE CAR HIT A TREE, THEN CONTINUED FORWARD UNTIL IT STOPPED IN THE BEDROOM OF MY DOWNSTAIRS NEIGHBOR. MY FOOT WAS ON THE BRAKE THE WHOLE TIME. I AM SURE OF THIS, AS THIS IS THE SECOND TIME IN A YEAR THAT THIS HAS HAPPENED TO ME. THE FIRST TIME, I WAS PULLING INTO A PARKING SPOT IN A PARKING GARAGE, AND THE CAR ACCELERATED INTO A CONCRETE POLE. REPAIRS TO THE AUTO BODY (ONLY) WERE COMPLETED, BUT IT SEEMED AS THOUGH THE ENGINE WAS DOWNSHIFTING VERY HARD. I HAD NISSAN CHECK IT OUT, AND WAS TOLD THERE WAS NOTHING WRONG. I AM NOT NUTS. I AM NOT SENILE. I AM NOT ELDERLY (52). I HAVE BEEN DRIVING FOR 34 YRS. AND HAVE HAD AN EXCELLENT DRIVING RECORD (UNTIL NOW). THE CAR WAS BOUGHT IN DECEMBER 2004, AND IN LESS THAN 18 MONTHS, I HAVE HAD 2 ALMOST IDENTICAL ACCIDENTS (SAME MALFUNCTION; SAME APPROACH TO THE PARKING SPOT). *NM