HAD A PROBLEM WITH VEHICLE SPEED CONTROL WHEN GETTING OFF FREE WAY ON OFF RAMP , TRYED TO STOP USING BRAKE BUTT CAR WAS SILL ACCELERATING . HAD TO APPLY BRAKES VERY HARD TO SLOW CAR DOWN GOT CLOSE TO END OF RAMP HAD TO PUT CAR IN NEURTAL AND THEN SAW THE TACK JUMP UP 6000 RPM AND BACK DOWN TO 700 RPM ALSO AT SAME TIME WHITE SMOKE WAS COMING OUT ALL SIDES OF CAR. SMOKE COULD HAVE BEEN FROM BRAKES OR HIGH RPMS ON ENG. CRUISE CONTROL WAS OFF. TOOK CAR TO DEALER THEY FOUND NO PROBLEM.