Lot of businesses already do this through payment gateways (Bitpay https://bitpay.com/, Coinbase Commerce https://commerce.coinbase.com/ Poof https://www.poof.io/, Moonpay https://www.moonpay.com/, Coinpayments https://coinpayments.net/, and the list keeps going on and on...

Telsa isn't exactly innovating in this space and it's BTC is already widely adopted...