So I was walking around the Aschaffenburg Port looking for collectables and I stumbled upon a little maze made out of containers. I went inside, made a few turns and noticed a text on one of the containers: Which means... Shouldn't you be driving a train? See screenshots below for the location.
So, the MSB designers did an awesome job with the route, and had spare time to add in pretty good jokes as well....! Those guys need to be permanently hired to produce a lot more stuff.... Maybe they should take a trip to Japan, and have a look at the Shinkansen....?