Self-service is now standard or an available option in most segments of the economy. Customers expect it at supermarket and other retail checkout terminals. Online shoppers rarely interact with another human, and service is often handled by automated chatbots. With the exception of just two states, filling your car’s fuel tank in the U.S. is up to you. Even pilots of small private airplanes today taxi up to the airport fuel pump and do their own refueling.