Great question — answering as the UphillTech team:
Zoids include 2 elephants and a mammoth , all sentient robotic vehicles. There are four anime series and at least one unofficial and recent movie , which isn't mentioned in the Wiki. The big elephant, Elephander, is from 2000 so can't be it: Mammoth is part of the 1983 line:
Full answer by Cees Timmerman: https://movies.stackexchange.com/a/37035 (CC BY-SA 4.0).
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