Part 3/10:
By 1948, the McDonald brothers opened a new restaurant dedicated solely to hamburgers, adopting an innovative operational model termed the "Speedy Service System." They streamlined the preparation and serving process, allowing for quick service—and revolutionizing the fast-food industry in the process. Word of their successful and efficient burger joint spread rapidly, positioning them as pioneers in the fast-food realm. However, unbeknownst to them, their lives and business were about to change dramatically.