It's about 1/11 scale of the real one, so the next size up from what Blondiehacks is building, and a bit more complicated and detailed. But essentially the same thing, a steam loco that runs on coal & water and works just like the real thing in every respect. See https://i.imgur.com/GuHR2j6.jpg

It can haul me and about 8 or 10 other people. It's a pretty popular hobby - look for live steam on YouTube.

"Blondyhacks" on YouTube is currently in the process of build model steam locomotive. You might want to check that out.

Or one of their previous projects if you'd like to binge start-to-finish.