DRIVING 60 MILES PER HOUR ON A HOUSTON,TEXAS CROWDED AND BUSY FREEWAY. MY CHRYSLER 300 CAUGHT ON FIRE IMMEDIATELY FOLLOWED BY THICK BLACK SMOKE AND A STRONG SMELL OF BURNING OF BURNING PLASTIC. THE CAR CAUSED CARS TO COME TO A COMPLETE STOP ON A 5 LANE FREEWAY BECAUSE OF THE THICK SMOKE. MY STEERING WHEEL LOCKED SO LOSS OF STEERING,BRAKES BECAME MUSHY. RIGHT BEFORE THE LOUD BOOM FIRE AND SMOKE. THE CHECK ENGINE DISPLAYED AND THEN THE OTHER LIGHTS IN THE INSTRUMENT PANEL AND SOUND OF A POP THEN BOOM OF SMOKE ALL WITHIN APPROX 5 SECONDS. IT HAPPENED REALLY FAST. I HAVE NO SPECIAL EQUIPMENT. NO REWIRING OF STEREO EQUIPMENT OR ANY OTHER KIND OF REWIRING. ALL FACTORY PARTS. *TR