Ooedo Mystery Train

The stations learn they won't be getting any passengers any time soon. When they try to find out why, the conductor evades their question, and the stations choose to use their unexpected break to relax. Roppongi wanders off on his own to think, but his thoughts are interrupted when the Miracle Train suddenly gains speed and inexplicably enters overdrive. At the end of their ride through space, the stations find themselves in a strange place. Source: crunchyroll