PURCHASED A BRAND NEW 2004 KIA OPTIMA FROM THE DEALER ON 12/09/2004. THE CRUISE CONTROL HAS NOT BEEN WORKING SINCE THE FIRST DAY IT WAS DRIVEN OUT OF THE DEALER'S LOT. WHAT'S MORE, THREE WEEKS INTO OWNERSHIP OF THE VEHICLE, IT BEGAN TO EXHIBIT INTERMITTENT, ROUGH IDLING PROBLEMS. THE PROBLEM IS NOT NOTICEABLE ON COLD STARTS, BUT AFTER IT HAS BEEN DRIVEN FOR ABOUT 35 MINUTES OR SO AND THE ENGINE HAS WARMED UP AND REACHED A CERTAIN TEMPERATURE, IT WILL BEGIN TO MAKE ROCKING-JERKY-THRUSTING LIKE MOVEMENTS. IT CAN BE FELT, AS IF, THE CAR IS EITHER CHOKING OR TRYING TO ACCELLERATE WHILE WAITING AT A RED TRAFFIC LIGHT. AS FOR THE CRUISE CONTROL, THE MODULE WAS ORDERED ON ITS FIRST VISIT, THE MODULE WAS DEFECTIVE AND REORDERED ON ITS SECOND VISIT, THE MODULE WAS INSTALLED ON ITS THIRD VISIT, AND THE DEALER STATED THAT IT NEEDED A SWITCH FOR THE CRUISE TO WORK. THREE MONTHS LATER, THE CRUISE CONTROL IS STILL INOPERABLE. AS FOR THE IDLING PROBLEMS, IT COULD NOT BE VERIFIED ON ITS FIRST VISIT. IT WAS VERIFIED AND REPRODUCED ON ITS SECOND VISIT, AND THE CAR STAYED FOR 2 AND 1/2 WEEKS WITH THE DEALER TO REPLACE A MASS AIRFLOW SENSOR. PICKED UP THE CAR ONLY TO FIND OUT THAT IT STILL HAS THE SAME IDLING PROBLEMS. IT WENT BACK TO THE DEALER 5 DAYS LATER, AND THEY CLAIMED THAT THE PROBLEM "COULD NOT BE DETECTED." TWO DAYS AFTER ITS LAST VISIT ON 02/02/2005, THE DEALER DELIVERED THE CAR WITH SIGNIFICANT DAMAGE ON THE DRIVER SIDE FRONT AND PASSENGER DOORS. THE CAR GOT IN AN ACCIDENT WHIL