Decades before McDonald's, White Castle was credited with creating the modern fast-food industry by pioneering many industry practices. A recent study found that after a long period of stagnant productivity growth, the restaurant industry experienced a surge in productivity during the COVID-19 pandemic. Fast-food restaurants adapted to consumer preferences for takeout and delivery, leading to innovative ways to serve customers faster. The use of technology, such as smartphone apps and quick-pickup shelves, contributed to increased productivity, benefiting both businesses and consumers. Economists see productivity growth as essential for economic well-being and anticipate further advancements in the fast-food industry through the use of AI and robotics.