MY FAMILY (1 YEAR OLD, 4 YEAR OLD, DOG, WIFE, AND I) WERE DRIVING FROM NC TO NY. WE STOPPED OUTSIDE OF ERIE SO I COULD GET SOME FOOD AND MY WIFE COULD WALK THE DOG. FOR A FEW MINUTES SHE TOLD BY THE CAR WITH THE DOOR OPEN WALKING THE DOG WHILE I GOT FOOD. WE GOT BACK IN THE CAR AND SHE SAID SOMETHING SMELLED FUNNY. I LOOKED AROUND AND SAW NOTHING SO WE HEADED BACK ON I-90. AS SOON AS WE GOT ON THE HIGHWAY WE SAW SMOKE AND PULLED OFF IMMEDIATELY. WE GOT THE KIDS AND DOG OUT AWAY FROM THE JEEP AND I WENT BACK TO SEE WHAT WAS GOING ON. I NOTICED NOW THE BACK SEAT WAS SMOKING AND REALIZED IT WAS THE PILLOW THAT MY WIFE HAD PUT BY HER FEET. IN THE LITTLE AMOUNT OF TIME THAT THE PILLOW WAS DOWN THERE WITH THE DOOR OPEN IT CAUGHT THE PILLOW ON FIRE WHICH THEN CAUGHT THE DOGS BED ON FIRE. I REPLACED THE LIGHT AND CHECKED IT AND NOTICED WITHIN SECONDS IT GET BURNING HOT AND THERE IS NO COVER OR PROTECTION FROM THIS BULB AT ALL.