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 :
Japans Largest Car Dealership Now Accepts BitcoinYou realize that even the article you mentioned is misleading?
the chain will first start the service at its 24 dealerships, but its plan is to eventually accept the digital coin in 550 additional locations.
Just like the others, they will accept coins only in 5% of their locations
Just to be clear, is the whole company of Rolls-Royce the one who accept bitcoin payments or Post Oak Motors (one of its dealers) only? Seems that the latter one.
Of course it's the second one!

The first is impossible and will never happen.
Rolls-Royce (who btw is owned by BMW), just like many others is not selling cars directly, they are doing this through dealerships, you are never going to buy an Audi or a BMW directly from the manufacturer.