The worlds most expensive car!

The bugatti Type 41 royale is the most expensive car in the world. People have estimated it to be around 10 million dollars. The Type 41 Royale engine uses up to 12.7 litres of gas to fill its tank up so 700 cubic inches.It is 15 feet long and 5 feet tall. The thing I don't get is that why would people want to waste 10million dollars on a car thats gonna make you waste so much money on gas because it takes up to 12.7 litres of gas. It would be better to get a normal car that would cost you less money!