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World's largest EV never has to be recharged
(www.greencarreports.com)
This is a most excellent place for technology news and articles.
Paywall article, but this already exists in Australia for pretty much the same use case: https://www.railtech.com/rolling-stock/2022/03/04/australian-mining-company-works-on-infinity-train-using-gravity-to-regenerating-batteries/?gdpr=deny