https://www.reuters.com/article/us-tesla-bitcoin-musk/musk-decries-bitcoins-insane-energy-use-after-tesla-payment-u-turn-idUSKBN2CU13E

Tesla Inc boss Elon Musk denounced the "insane" amount of energy used to produce bitcoin on Thursday, doubling down on his sudden rejection of the cryptocurrency as a means of payment over environmental concerns.