A powerful diesel electric locomotive and it's driver Max somehow were transported to Equestria. (The Story is being rewritten)

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Source for Image : 120 269-6 (Taigatrommel)des SEM im Bw Chemnitz-Hilbersdorf - Bahnbilder.de

A Video about the Taigatrommel: Die Taigatrommel - YouTube ( The video is in German use subtitles)

Wiki: DR-Baureihe V 200 – Wikipedia