Elon Musk indicates that Tesla will stop using Bitcoin for transactions. Tesla wants to use cryptocurrencies that are at least 100 times energy-efficient per transaction. There is speculation that Tesla could enable solar-powered cryptocurrency mining, support other cryptocurrencies like Doge and could create their own cryptocurrency. Tesla & Bitcoin pic.twitter.com/YSswJmVZhP — Elon Musk (@elonmusk) May ...