In 1921, entrepreneurs Jessie G. Kirby and Reuben Jackson opened the first restaurant that was specifically designed to serve people in their cars.
Soon after, drive-in chains like Maid-Rite and Carpenter's Sandwiches began popping up all across the US, forever changing the way Americans eat.
While drive-in eateries are less common now, some have stuck around.
The introduction of motor banks in the 1930s preceded the rise of drive-thru restaurants.
Today, electronic ATMs have eliminated the need for tellers to sit at drive-thru windows.
Red's Giant Hamburg, which opened in 1947, was among the first restaurants in the US to have a drive-thru window.
In 1948, Harry and Esther Snyder opened the first In-N-Out Burger, which had a novel two-way speaker system that let drivers order food without leaving their cars.
Today, drive-thru service is more efficient than ever before.
And some restaurants even have two drive-thrus lanes.
Drive-thru dining took off in the 1950s as the automotive industry reached new heights.
Before long, fast-food drive-thrus were everywhere.
By the 1970s, many of today's major fast-food chains began installing drive-thru windows.
In the '80s, some McDonald's locations used conveyor belts to transport food to the drive-thru window.
Today, it's common to see multiple employees working near the drive-thru window.