If you drive a gas-powered car, you know the drill when it’s time to refuel: You pull up to the pump, scan your card or go inside to pay with cash, put the nozzle in your tank and pull the trigger to ...

The little notches you see on gas pump nozzles aren’t meaningless. They have several key purposes. For starters, they allow the customer to pump gas without having to hold down on the trigger. They ...