Awesome the 3901 tank engine sadly none of them which is a shame really, some we wish one could have made it to preservation.

This is so... out of the blue, I love it!

It's getting rough! Smoke.Hold on a second, I can't remember what the previous smoke was like, but it feels really different from other people's.To put it simply, it makes the smoke look more natural and more like what people imagine.This smoke doesn't seem to be harmful to inhale. The train itself feels more integrated. Thank you.