Everything for a can of gasoline

It is very bad to run out of gasoline in the middle of the city and with no chance to get to the nearest gas station. Couple tries to ask for help but only one dude stops and promises to help them by taking to the gas station but somewhere on the road it turns out the couple has no money for gasoline. What should they do in such a situation? Get out of the car and walk? Luckily, the dude offers a way out but it sounds too spicy and too risky. He simply offers the sexy brunette to satisfy him with her three holes.