Analysis: Elon Musk wants a greener bitcoin. Has he got a plan or a pipedream?
https://www.reuters.com/article/us-tesla-bitcoin/analysis-elon-musk-wants-a-greener-bitcoin-has-he-got-a-plan-or-a-pipedream-idUSKBN2CU1ZE
Elon Musk says Tesla won't use or accept bitcoin until he can be sure it's produced sustainably. He may be waiting some time.