Before buying a new car for bitcoins, perhaps you better calculate how much it will be profitable. I know that different exchangers have different rates, for example, on this exchanger https://hiribi.com/
you will find the highest rates for selling bitcoins. In addition, selling bitcoins will not take much time, so I think that selling bitcoins and buying a car can be much more profitable than buying a new car for bitcoins. At least very often in stores where I can pay with cryptocurrency, this isn't too profitable.