At and above 80 miles an hour this sound develops in what sounds like the drivers side door. It is hard to describe it--it sounds like a tinkling or crinkling of aluminum foil. I imagine it as a piece of aluminum foil fluttering in the door, but that doesn't really make any sense. I plan on taking the car to the dealer next week, but any thought/suggestions as to what this could be? The sound always disappears after I dip below 80 mi/hr.

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