I was wondering if, as some of us has assummed, the image that we haven't seen of Cooper driving at night is actually Mr. C pretending to be Cooper, I guess he want to kill Gordon, Albert and Tammy. But Cooper leave a paper to Bushnell in case Gordon Cole called. 

As far as I can see there are two possibilities:

- Cooper tell him that he's going to Twin Peaks and that he meets him there, but with no explanation that he was in a coma and that he was travelling by plane with the Mitchum Bros. So Gordon, expecting Cooper, falls into the trap of Mr. C. and he dies (or not).

- Cooper explains everything and Gordon get prepared for a big fight in Twin Peaks along with Hawk, Bobby, Andy and Sherrif Truman. 

I'm very happy to see Cooper again, but I don't wanna idealize a happy ending yet.