CNBC reports that “the nation’s largest retailer announced this week it will first start delivering Dunkin’ products from its own stores, but will then expand the program over the next year to include most of the doughnut chain’s approximately 10,000 U. This outside-the-store experiment builds upon the retailer’s similar delivery program with in-store Subway restaurants. “Industry experts say this amounts to Walmart throwing down the gauntlet at rival food delivery services like Uber Eats and DoorDash. ” Walmart says that “the Dunkin’ deliveries will run through its new service called Walmart Restaurant Delivery, for which Subway was the first partner. ” In its announcement, Walmart underlined its ambitions by referring to itself as a “rapidly emerging contender in the restaurant delivery business.