In-N-Out's innovative speaker system

Today, it’s difficult to envision a world without the drive-thru speaker system. Yet, until 1948, fast food services relied on carhops to take customers' orders and deliver them to their vehicles. Sonic Drive-In, known for its unique name, continues to utilize this traditional method of fast food service.
While the concept of ordering food from your car was already established, achieving prompt and efficient service was a challenge. Before the introduction of the speaker system, In-N-Out employed a different approach where customers could drive up to a window and place their orders directly with the cooks. This method was similar to the modern drive-thru, but it still faced timing issues, as cooks had to juggle taking orders and preparing meals.
After many late nights of experimentation at home, Harry Snyder successfully developed a speaker system that allowed customers to place their orders without leaving their cars. This innovation alleviated pressure on the cooks and reduced traffic congestion from waiting vehicles. The two-way speaker system created a seamless connection between staff and customers, leading to its widespread adoption by nearly every fast food chain to enhance order tracking and service efficiency.
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