I WAS DRIVING ALONG AT APPROXIMATELY 35 MPH (SPEED LIMIT) IN THE MIDDLE LANE OF A 3 LANE ROAD AND APPROACHED A RED LIGHT. I BRAKED, BUT INSTEAD OF THE CAR SLOWING DOWN, IT STARTED ACCELERATING VERY FAST. I PRESSED DOWN ON THE BRAKE AS HARD AS I COULD BUT THE CAR CONTINUED SPEEDING UP. THERE WERE CARS ON BOTH SIDES OF ME SO I HIT A PICKUP TRUCK IN FRONT OF ME - THE AIR BAGS DEPLOYED ON BOTH MY SIDE AND THE PASSENGER SIDE WHERE MY SON WAS SITTING. MY CAR HIT THE TOW BAR ON THE PICKUP TRUCK AND TOTALLY CRUMBLED. NEITHER MY SON NOR I WERE HURT BECAUSE THE AIR BAGS PROVIDED PROTECTION. THE FELLOW IN THE PICK UP TRUCK DID NOT SUFFER ANY INJURIES AT ALL. HOWEVER, DAMAGES AND REPAIR TO MY AUTO COST MY INSURANCE COMPANY MORE THAN $19K. THE CAR WAS RETURNED TO ME AFTER MORE THAN 9 WEEKS (5/20/11) IN THE SHOP. AT THE TIME THE CAR WAS RETURNED IT HAD APPROXIMATELY 3020 MILES. AFTER A DAY OR TWO, THE CAR BEGAN TO RUN VERY ROUGHLY WHEN IDLING AT LIGHTS. I TELEPHONED THE DEALERSHIP AND ARRANGED TO BRING THE CAR IN FOR SERVICE ON WEDNESDAY, 5/25/2011. ON THE WAY TO THE DEALERSHIP, THE CAR FAILED AGAIN EXCEPT THIS TIME, I WAS HALTED AT A RED LIGHT, AND THE CAR ON ITS OWN, WHILE MY FOOT WAS HOLDING THE BRAKE, ACCELERATED VERY FAST, AND STARTED TO MOVE. I WAS THE FIRST CAR IN THE LANE (PREPARING TO TURN RIGHT) SO I WAS ABLE TO STEER THE CAR OVER TO THE SIDE OF THE ROAD, MY SON SLAMMED THE CAR INTO PARK. MY INFINITI DEALER IS INDICATING THAT I MUST HAVE HAD ONE FOOT ON THE BR