Gegege no Kitarou: Youkai Tokkyuu! Maboroshi no Kisha

ゲゲゲの鬼太郎 妖怪特急! まぼろしの汽車

This film is sort of a mashup of Ghost Train (episode 7) and Great Yokai War (episodes 10-11) from the original 1968 TV series, but with a new spin on it to bring it towards the modernness of the 1996 TV series--essentially making an entirely original plot. (Source: TSHS)