Nothing is impossible - to all sections of steam there is an equivalent model scene - of course operating their treasures with real steam.
Already stunning in their normal size, admiring the variouos machines in different scales is fascinating. One can not but be amazed at the skill involved.
More so - they also work!
And for the children riding the open carriages of the 5" steam railway is far more exciting than sitting in a closed compartment of the real thing.