I've seen pictures of US Army jeeps being used in those roles post D-Day in France, due to a lack of locomotives. You know, those things the allies had been blowing up prior to the landings!
I always wanted to do a diorama of one pulling a boxcar, and title it "Boxcar Willys". :)
Sorry, it's the name of an old country musician.
Nice model, btw.
Alvis 3.1