Continuing the Military-Industrial-Congressional Complex theme.
Looks like a V-2 to this reporter.
Hardly prototypical, but none of the other U.S. Army rolling stock except the tank cars is. The Navy boxcar probably is.
This certainly isn't. It's Nazi-inspired as well.
The inspriation, a
composite Krupp K5, from the captured Anzio Annie & Anzio Express.
Modifications & adjustments: One of the tabs on one of the trucks was broken; had a replacement on hand.
And decided the two wooden crates w/ trefoils were dangerous, & that the V-2 would look better centered on the car. Fortunately there was little glue used, & it took mere minutes.
Three dabs of paint & replacng the string w/ chains will finish the job. Dunno if the rocket is 3-D printed, but it's very light.