Very proud little engine. Nice tones. Desat adds to the old time feeling. Too bad you couldn't have obscured the cars and trailers in the distance, though. They kind of spoil the mood.
Your title lends me to believe that you're intentionally going for a vintage/sepia tone for this photo? Overall it's fine and the POV is good. It could be this monitor, but it seems like you could boost the black just a little. Probably could have cloned out the cars and building in the bottom left being that this is an advanced editing challenge. All JMO of course. Good luck in the challenge.