BOTH DOOR PANELS ON MY 2006 LEXUS IS 250 ARE MELTING AND PRODUCING THE STICK STICKY BLACK TAR LOOKING STUFF I GUESS IT'S FROM MELTING AND THE ODOR FROM THAT IS SOMETIMES SO STRONG WHEN I'M ON LONG RIDES THAT IT MAY GIVES ME HEADACHES MY DAUGHTER HAS BURNT HER ARM BECAUSE THE DOOR PANELS ARE SO HOT TO TOUCH AND MELTING AND THIS IS USUALLY ALL YEAR ROUND BECAUSE OF THE SUN HITTING IT.