Hello! You certainly found a fine example of a workhorse engine for your entry in the Plane/Auto/Train Challenge.
While you met the Challenge spot-on, your engine just didn't meet the tough creative expectations of our voting group. As one of your comments read, a different angle could have made a difference in its appeal. Perhaps a very tight shot could have been fun. With that strange windshield, a tight shot might have given it an other-worldly aspect that would stand out from the crowd.
Who knows! In any event, it looks as if you enjoyed finding this nice image and that's what counts.
technically good but kind of flat. For me if the main focus of the image is placed in the centreline of the image I prefer very high degree of symmetry - it has to be exact centre and balanced symmetrically. I wonder if you had taken this from a different vantage you may have captured the sweep of the train back around the corner (I like curves!) and could of balanced the long 'tail' of the train on the right with the large cab on the left of the image This just my taste though.