What do you all think about train being an arc, does it make sense? I like the show but wouldn't the rails get buried in ice, why does it need to keep moving, you could just have engines underground in a bunker, get geothermal preferably and you can expand and get resources which you can't if you literally can't stop. Oh an why is going around the world instead of just a loop in one relatively warmer country? Haven't seen S2 yet.
The train was not designed to be an end of the world haven but rather as a sort of worldwide cruise ship alternative so practicality and resource management in the ice apocalypse were not factored in when it was built.