Rails to Russia! 
…
Imagine if the Germans had gotten ahead on nuclear weapons and made their railguns atomic?
What would the siege of Sevastopol have been like?
Or the bombardment of Anzio by Leopold and Robert?
Or did Harry Turtledove already write those alternate histories?
And in that huge Lionel ‘O’ gauge. I never had room for that; HO kid. That’s new for 2024 and has a spring-launched missile inside. Hope no conductors put an eye out or swallow the missile or they’ll pull it off the market.
That was one of the deployment plans for the MX missile back in the 70’s when it was first proposed. A Round Robin track with multiple hardened shelters for each missile to move around between, complicating the Soviet’s targeting situation. Each missile was supposed to have something like ten or a dozen shelters to shuttle between. Of course as a cost cutting measure that was turned down and into single fixed underground silos they went.
In the 2010s, as part of the modernization of its strategic nuclear forces, Russia announced plans to develop a new generation of nuclear missile trains.
Here’s an earlier generation RT-23 Molodets ICBM :
https://en.wikipedia.org/wiki/RT-23_Molodets
H.P.
And it would have been a good idea!
Russia was already doing it. (Harder to find, harder to take out) And now Russia has Mobile truck mounted ICBMs that are much harder/impossible to keep track of.