I DRIVE A 2006 LEXUS GS300. LAST FALL,AS I BACKED OUT OF MY PARKING SPACE - IN A BUILDING - MY CAR "TOOK OFF" AND HIT A CEMENT WALL. ( AT FIRST, I THOUGHT I HIT THE GAS PEDAL IN ERROR HOWEVER, AFTER WHAT HAPPENED NEXT, I KNEW THAT WAS NOT THE CASE. FORTUNATELY, THERE WERE NO PEDESTRIANS IN THE PARKING LOT. ) I PUT THE CAR IN DRIVE AND IT "TOOK OFF" AGAIN. LUCKILY, I HIT A CEMENT PARKING BUMPER THAT STOPPED ME. ALL THIS TOOK PLACE IN MAYBE 15 SECONDS OR SO. NOT REALIZING THERE WAS ANYTHING TERRIBLY WRONG WITH MY CAR, I STEERED AROUND THE BUMPER. THE CAR CONTINUED TO ACCELERATE AND I WAS HEADED FOR ANOTHER CEMENT WALL. I WAS APPLYING MY BRAKES WITH ALL MY EFFORT AND FINALLY I CAME TO A STOP A FEW FEET FROM THE WALL. SHAKING, I DROVE MY CAR DIRECTLY TO THE LEXUS DEALER AND TOLD HIM WHAT HAPPENED. (AT THAT TIME I USED THE TERM "TAKE OFF" AS I HADN'T HEARD ABOUT ALL THE ACCELERATION PROBLEMS) HE RAN MY CAR THROUGH A COMPUTER CHECK AND ASSURED ME THAT HE COULD FIND NOTHING WRONG. SEVERAL WEEKS LATER A FRIEND ASKED ME WHAT KIND OF CAR I DROVE AND TOLD ME ABOUT ALL THE PROBLEMS TOYOTA WAS HAVING. I DROVE MY CAR BACK TO THE DEALER AND ASKED HIM TO RECHECK THE CAR. HE DID, AND AGAIN ASSURED ME THAT THERE WERE NO PROBLEMS. WE BOUGHT THIS CAR USED LESS THAN 1 YEAR AGO WITH JUST 12,000 MILES ON IT. IT OCCURRED TO ME THAT IT WAS POSSIBLY TRADED IN BECAUSE IT HAD ACCELERATED WHEN THE LAST OWNER HAD IT. THE DEALER CHECKED AND SAID THERE HAD BEEN NO PREVIOUS ACCELERATION PRO