Well technically, Lamborghini has always been accepting payments in Bitcoin for so many years. So I guess you can say that every supercar manufacturer is doing it to copy them

True. But I wonder why Tesla doesn't. I am speculating that they would have made more sales and seen their revenue grow if they decided to start accepting Bitcoin on their Cyber truck. I mean, there's so much up sides to accepting Bitcoin as a payment option especially for supercar manufacturer. It is basically a competitive advantage.
On a more serious note, it's clear that people in the US and the EU have the most cryptocurrency holders, and not only that but they hold the largest amounts in Bitcoin and so they should easily be able to afford the price.
Yes, that is a good observation. I never thought about it. In my country people also hold but we don't spend it on these things, it is more like a store of value for us, to preserve out wealth from the crippling economy.