You might not know this, but before John Mayer became a pop-icon, he pumped gas to save up for his first guitar in his high school years.

Ironically enough, Mayer still has to pump his own gas–from time to time–only now rather than filling up other people’s tanks, he fills up the tank of his own Cayenne Porsche or whatever other luxury vehicles he has garaged.

Why wouldn’t he use his Black AMEX at the pump? If you’re going to fill your tank with premium gasoline for a high-perfomance engine, you might as well use a premium, high-performance credit card to do it!