The title is misleading, Rolls-Royce is not accept BTC as a means of payment - but only Post Oak Motors as dealership. This is not a first case in USA that dealerships accepts BTC in buying a car, at the end BTC is just a money. They will just use BitPay and get $ on their account, very easy and practically - no need to have wallet or know anything about cryptocurrency.

Situation is even better in Japan where 2 big car dealership start accept BTC some time ago, so you can buy any luxury car like Lambo, BMW, Mercedes or Ferrari by using BTC and Bitflyer.

More info : Japan’s Largest Car Dealership Now Accepts Bitcoin