At‘s Baggers, the HeineMack company’s Nuremberg, Germany, restaurant, food is delivered to tables on tiny trolley cars traversing roller coaster-like tracks. Patrons start their schnitzel or strudel on its epic journey with a tap to touch-screen, self-service point-of-sale-system ordering terminals positioned at eye level where they sit. And at the franchised Buffalo Wild Wings Grill & Bar restaurant in Southgate, Mich., operated by JK&T Wings Inc., it may appear as if some of the ...

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