How Can Le Man Cars Drive Hundreds Of Miles at Over 140mph Without Running Out Of Fuel Straight Away

Question

If I were to drive my Volkswagen with a V6 engine at 140mph, it would run out of fuel within an hour. How can these types of cars with V8 do hours of driving at over 140mph? What kind of black magic is this.

Edit: Thank you all for the answers.

In:

Answer 1

If you have a 14 gallon tank, your VW would only need 10mpg to go 140mph for an hour. This is easily achievable for a modern v6 engine