if you noticed how buggy the wagons get sometimes ... what do you think would happen if the trains ran? When multiple people are in a room the server has to generate everything for each viewer so every one can see the same things going on around them ... in SP your console only has to generate the world for you alone ... It will work one day ... just not today ... maybe they could just park a train at the stations from time to time ... like the ammo loading points ... on sometimes ... off sometimes ...