I PURCHASED A NEW G37X INFINITI ON MARCH 31, 2009. ON APRIL 14, I WAS DRIVING IN A LINE OF TRAFFIC AND HAD TO STOP FOR A RED LIGHT. I APPLIED MY BRAKE AND INSTEAD OF STOPPING THE CAR KEPT ON ACCELERATING (LUNGING) FORWARD AND FINALLY HIT THE CAR IN FRONT OF ME. I WAS GOING SLOWLY AND THERE WAS NO DAMAGE. THE DRIVER OF THE HIT VEHICLE GOT OUT TO INSPECT THE DAMAGE AND WHILE HE WAS LOOKING, THE CAR LUNGED FORWARD AGAIN, ALMOST HITTING HIM. I THOUGHT PERHAPS IT WAS MY FAULT BECAUSE IT WAS RAINING OUT AND THE CAR HAS ABS BRAKES WHICH MY PREVIOUS 12 YEAR OLD CAR DID NOT HAVE SO I THOUGHT I DIDN'T KNOW HOW TO DRIVE IN THE RAIN. I IMMEDIATELY DROVE STRAIGHT TO THE INFINITI DEALER AND THEY CHECKED IT OUT AND COULD FIND NOTHING WRONG. ON SATURDAY, NOVEMBER 7, 2009, I WAS COMING TO A STOP SIGN AND APPLIED MY BRAKES AND AGAIN THE CAR WOULDN'T STOP. IT KEPT LUNGING FORWARD AND WENT THROUGH THE INTERSECTION. FORTUNATELY, NO ONE WAS CROSSING THE STREET AND THERE WERE NO CARS IN FRONT OF ME. I WAS REALLY SHAKEN UP. ON MONDAY, NOVEMBER 9, I BROUGHT IT BACK TO THE INFINITI DEALER AND THEY SAID THERE WAS A HARSH 4>3 DOWNSHIFT CAUSING VEHICLE TO LUNGE. APPARENTLY, A TECHNICAL SERVICE BULLETIN HAD BEEN ISSUED BETWEEN MY TWO EVENTS AND THEY DID THE FIX. (TSB ITB09-032B). I WENT ON-LINE AND DISCOVERED THAT THIS TSB DOES NOT ADDRESS THE PROBLEM I DESCRIBED. I THEN CALLED THE REGIONAL INFINITI DEALER AND THEY OPENED A FILE ON THE CASE AND SAID I SHOULDN'T DRIVE THE CAR. I BROUGHT IT BACK TO THE DEAL