THIS EVENT IS A ONE TIME OCCURRENCE--THANK GOODNESS! WHILE DRIVING DOWN A 4 LANE RESIDENTIAL THOROUGHFARE, THE INTERIOR FILLED WITH SMOKE, I BEGAN COUGHING & GASPING FOR AIR AND THE SEAT BACK BECAME VERY HOT, ALL SEEMINGLY SIMULTANEOUS. INSTANTLY OPENING WINDOWS PROVIDED OXYGEN & CLEARED THE SMOKE AS TURNING OFF THE SEAT HEATER RELIEVED THE HOT SEAT SITUATION. GRATEFULLY, I WAS NOT IN FREEWAY TRAFFIC, COULD PULL TO THE CURB. EXAMINATION ON THE LEFT SIDE OF THE DRIVERS SEAT BACK, ABOUT WAIST HIGH, REVEALED A HOLE ABOUT THE SIZE OF A FAT CIGAR BURN. MY SEAT HAD APPEARED ABOUT TO BURST INTO FLAMES! *TR