Hello,
I've just ordered one 3D printed train (inverted). I will post some pictures when I get it.
Here, the inverted wagon
inverted
here a B&M like style that I ordered and paint by myself:
https://www.shapeways.com/product/VVHVSRNYS/roller-coaster-train-seats-v2?li=shop-results&optionId=56214564
Here is the result once painted (not perfect but I will improve):
https://www.dropbox.com/sh/tf18m6uyxxrxut0/AABCN5zCkuD9qE7dNW1o2Fb7a?dl=0
Do nt hesitate to comment it !
A roller coaster fan.