2000 LEXUS ES300 Engine And Engine Coolingengine Problems

I WAS DRIVING ON A BUSY ROAD, AND MY 2000 LEXUS ES300 RPM WENT DOWN TO 0 AND SHUT OFF IN THE MIDDLE OF BUSY TRAFFIC. I WAS ALMOST HIT FROM BEHIND AND COULD HAVE CAUSED A MAJOR PILEUP WITH INJURIES. I HAD TO BE PUSHED OUT OF TRAFFIIC CAR WOULDN'T START. AFTER, GETTING THE CAR TO THE MECHANIC THEY DETERMINED THAT IT WAS THE IDLE AIR CONTROL VALVE, IT IS COSTLY TO REPLACE AND A PROBLEM WITH THAT MAKE AND MODEL 2000 LEXUS ES300. THIS IS A SERIOUS ELECTRICAL PROBLEM AND I FOUND OUT A FAULTY IAC VALVE CAN CAUSE YOUR CAR TO STALL ANYWHERE AT ANYTIME. I AM THANKFUL NO ONE, AS WELL AS MYSELF WAS INJURED, BUT I DO NOT KNOW ABOUT THE NEXT PERSON THIS MAY HAPPEN TO. THE PART COST ABOUT 200 DOLLARS AND THE LABOR IS APPROXIMATELY 300 DOLLARS. THIS HAPPENED ON WED. 08/10/2011...

TL*THE CONTACT OWNS A 2000 LEXUS ES300. WHILE DRIVING AT AN UNKNOWN SPEED, THE CONTACT NOTICED SMOKE UNDERNEATH THE HOOD. SHE ASSUMED THAT THE VEHICLE WAS OVERHEATING AND PULLED OVER TO ALLOW THE VEHICLE TO COOL DOWN. A COUPLE OF MINUTES LATER, THE VEHICLE CAUGHT FIRE AND WAS TOWED TO A BODY SHOP. THE CONTACT HAS PICTURES OF THE VEHICLE. THE BODY SHOP DOES NOT KNOW WHAT CAUSED THE FIRE. THE INSURANCE COMPANY STATED THAT THE VEHICLE WAS DESTROYED. THE DEALER COULD NOT ASSIST AND STATED THAT THERE WERE NO RECALLS FOR THE VEHICLE. THE DEALER FURTHER STATED THAT THIS INCIDENT WAS ONLY AN "ACCIDENT". THE FAILURE AND CURRENT MILEAGES WERE 114,000.