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The world's 280 million electric bikes and mopeds are cutting demand for oil far more than electric cars
(theconversation.com)
This is a most excellent place for technology news and articles.
I love my Bafang too but be careful of regulation depending on your country, an e-bike is 250W so of you put a more powerful motor you get in the moped category with different rules (helmet, back mirror, insurance...)