Sexual symbolism of the final shot...
I watched this last night for the nth time. I have seen this movie so many times I have lost count but can never resist when it is running. But for the first time, maybe because I was very tired and it was around 3 am when it ended, but the final shot seemed to be filled with sexual innuendo. Thornhill and the new Mrs. Thornhill roll into bed as man and wife and then the scene shifts to a train entering a tunnel. For whatever reason, that just seemed to me to be so loaded with sexual meaning last night.
Now what I want to know is whether anyone else sees that scene the same way or if I simply have a perverted mind! LOL I've never noticed anyone bring this up in discussions of the film so it is probably the latter.