Colors of the train and foreground are good; sky looks a tad aqua but skies have a tendency to do that. Nice composition with the slant of the mountains going down the same direction the train is headed. Could be a bit sharper as far as definition of the train, maybe.
Wow, wouldn't it be fun to take a train through that kind of scenery! Very nice capture. I would have liked the sky to have a bit more contrast. I'm not sure, but it looks like the photo might have been oversharpened. There is a white halo around all of the mountains.
Takes me back to 1974 and a ride with CPR from Winnipeg to Vancouver, two days in Calgary on the way. What a trip.
As for the shot :) I really like it, just wish it was bigger. Is it really 640? Fantastic background there.