Cal,
Your "stealth" shot is at the Grand Hotel, Mackinac Island, Michigan.
Notaclue what movie was shot there, though I faintly recall reading about it during, before, or after I spent back-to-back summers a couple hundred miles west, out the UP, in Crystal Falls, MI, those summers being in 1981 and 1982. The Mackinac Straits bridge was in the middle of a two-day trip up or back from Virginia, and being loaded with belongings/towing, etc, we never stopped for the Mackinac Island tour, and we could of course not take our trucks over there!
Foy