The machines, which let customers customize their beverages, were installed at three Cosi Restaurants locations and a Wingstop eatery, with another machine expected Nov. 22 at Go Roma, the Sun-Times said Friday.
The fountain machines include several flavors not previously available in the United States, including Orange Coke, Peach Sprite and Raspberry Diet Coke.
"People are fascinated by it," Wingstop franchisee Tom Schaffer said.
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