National Geographic : 1974 Apr
Or the spur-of-the-moment impulse to call on your best customer, only to discover he's out calling on his best customer. Or a wild-goose chase for some gadget you need, without knowing precisely who has it. Or where. A gallon here. A gallon there. Add it up. Multiply it by hundreds of thousands of similar trips taken every day. Needless trips. It comes to an ocean of wasted gasoline. It doesn't have to. Not if you dial first. Before you drive.