[Answer] What fast food chain was the first to offer full drive-thru service?

Step 1 : Introduction to the question "What fast food chain was the first to offer full drive-thru service?"

...Founded in 1948 by Harry and Esther Snyder in Baldwin Park, California, In-N-Out Burger revolutionized the fast food experience by introducing a unique concept. Recognizing the demand for a faster and more convenient dining option, the Snyders allowed customers to order their meals from the comfort of their own cars, eliminating the need for a carhop. This innovative approach involved the integration of a two-way intercom system and dedicated drive-thru lanes, laying the foundation for the modern drive-thru and forever reshaping the fast-food industry.

Step 2 : Answer to the question "What fast food chain was the first to offer full drive-thru service?"

In-N-Out Burger:

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