I WAS STOPPED AT A RED LIGHT ON THE WAY TO WORK THIS MORNING. IT WAS 55 DEG OUT, AND I HAD THE REAR DEFROSTER ON BECAUSE THERE WAS CONDENSATION ON THE BACK WINDOW. I HEARD A LOUD POP LIKE A ROCK HAD HIT THE CAR AND LOOKED BACK TO SEE SMOKE AND MY PASSENGER SIDE REAR WINDOW PANEL SHATTERED. WHEN I LOOKED CLOSER, THE PLASTIC TRIM ON THE CORNER OF THE WINDOW WAS MELTED, AND I COULD SEE BURN MARKS ON THE CORNER OF THE GLASS. IT TURNS OUT IT'S A VERY COMMON PROBLEM FOR THE 2010 MODEL YEAR F-150. I SEARCHED "FORD F-150 REAR WINDOW DEFROSTER BURNING" IN GOOGLE, AND THE TOP RESULT WAS THIS: HTTP://WWW.GLASSBYTES.COM/2013/12/SEVERAL-FORD-F-150-OWNERS-REPORT-SHATTERING-BACK-LITES-TO-NHTSA/ THE DESCRIPTION OF WHAT HAPPENED IS NEARLY IDENTICAL TO MINE, OVER AND OVER AGAIN. THERE ARE 51 INSTANCES OF THIS OCCURRING REFERENCED IN THE COMMENTS SECTION OF THIS ARTICLE ALONE! PHOTOS OF MY INCIDENT ARE AVAILABLE IF NEEDED. *TR