This has been my concern here in my own country Nigeria. No auto dealers or automakers has ever accepted any crypto particularly BTC for purchase payments
I am certain that it wont be a big concern for all Nigerians in general because there are almost no Nigerians who would be willing to buy a car using cryptocurrencies. There might not even be enough cryptocurrency users everywhere in the first place lol.
It is because in your country bitcoin is not popular yet and it will take long time to attract people and they invest their money in bitcoin and start dealing in bitcoin. Dont worry in the future your local markets will start accepting bitcoin as their payments and will create ease for its users and customers. It is time consuming and you will have to wait for it.