I PURCHASED A NEW 2005 XG350L ON DECEMBER 7, 2005. MY INITIAL OPINION OF THE VEHICLE WAS THAT THE CAR RAN SLUGGISH UNLESS IT WAS WARMED UP AT LEAST FOR 5 MINUTES BEFORE DRIVING. THEN ON DECEMBER 26, 2005 WE WENT TO THE STORE AND BEFORE TURNING OFF THE CAR THERE WAS A ROUGH IDLE. ABOUT 45 MINUTES LATER WE LEFT THE STORE AND PROCEEDED HOME. I SAT IN THE PASSENGER'S SEAT AS WE DROVE ABOUT OF A MILE AND WAS FORCED TO SIT IN STOP AND GO TRAFFIC. WE STOPPED WITH ABOUT CAR LENGTH BETWEEN US AND THE CAR IN FRONT WITH HIS FOOT ON THE BREAK. ALL OF A SUDDEN THE CAR STARTED EASING FORWARD. HE APPLIED MORE PRESSURE TO THE BREAK AND THE CAR CONTINUED TO MOVE FASTER. WHEN HE REALIZED THE CAR WAS NOT GOING TO STOP HE THEN PRESSED THE BREAK WITH BOTH FEET WITH ALL OF HIS STRENGTH AND THE CAR ACCELERATED EVEN MORE AND LUNGED FORWARD INTO THE CAR IN FRONT PUSHING IT TOWARDS THE CAR AHEAD OF IT. AS HE PUT THE SHIFTER INTO PARK WHEN THE CAR WENT INTO NEUTRAL THE RPMS OF THE ENGINE REVVED REALLY HIGH, WHEN PASSING REVERSE IT MADE A LOUD KNOCKING SOUND MAKING THE CAR SHAKE, AND WHEN IT REACHED PARK THE CAR`S RPMS REVVED VERY HIGH THREE TIMES CONSECUTIVELY, FASTER THAN PHYSICALLY POSSIBLE TO FLOOR THE GAS PEDAL MANUALLY. ALL OF THIS HAPPENED IN THE TIME IT TOOK THE DRIVER TO TAKE HIS HAND OFF OF THE SHIFTER TO REACH THE IGNITION TO TURN OFF THE CAR. IMMEDIATELY AFTER THE POLICE INSTRUCTED US TO MOVE THE CAR INTO THE PARKING LOT I CALLED THE DEALERSHIP TO REPORT THE PROBLEM. THE SERVICE MANAG