My wife put her purse in the rear trunk of our 986 a few weeks ago for a 20+ mile trip.
She got her purse out as soon as we reached our destination and suddenly let out an "Ouch!" and almost flung the purse unto the ground. Apparently the metal buckles on the bag had gotten quite hot, not hot enough to burn you but hot enough to give you a nasty surprise.
Can't really say how hot the buckles were since I declined her offer to feel how hot they were.