McDonald's top-secret new chain CosMc's prepares to open its first location in Illinois, as speculation mounts

McDonald's top-secret new spin-off CosMc's is on the verge of opening its first restaurant in Illinois - but the chain has yet to say what exactly it'll serve. The CosMc's restaurant is on the verge of completion in Bolingbrook, Illinois - although a formal opening date has yet to be set. It has…

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