Here's something you can do with paper money if you:
A. Decided the price of gas was just too high and you would never ever buy gas again.
B. Have a lot of free time because you lost your job because your car doesn't have gas because you decided the price of gas was just too high and you would never ever buy gas again.
C. Developed a sense of humor with all this free time and found out you enjoy watching the gas attendant's expression when you pull out these paper suckers to pay for gas to drive your car and apply for a new job.