Drive-through service in Quick Service Restaurants (QSRs) emerged in the 1930s, with Red’s Giant Hamburg opening the first drive-through in 1947. In-N-Out Burger revolutionized the concept in 1948 by introducing the two-way intercom system. The trend exploded during the 1950s and 1960s alongside America’s growing car culture. McDonald’s joined later, opening its first drive-through in […]