Satisfaction

One in a continuing series of picturesque car cards:

When Chicago Car Advertising couldn't get enough paying customers, they'd fill the rest of the slots in the cars with public service announcements. These announcements might tell you to go to church, buy Savings Bonds, or not to burn down a forest. In this case, you're told to spend your money with people who advertise on the other car cards. If you do, you're sure to be satisfied. Though I'm not sure why that fish is smiling....