I think it's a great idea. And I like this shot.

My only suggestion for improvement would be to make the windows in the train as continous as possible. So that only the scenes in them are different. Especially with the way you have the middle frame here , it doesn't give me a train feel as good as the other two and thus feels out of place. had the middle shot kept the same aspect ratio and even better kept the same window/devider/window..etc going it would've have given a boost IMO.