Amazon delivery, eat your heart out!  Walmart announced that it will soon offer a service in which your groceries will arrive straight to your refrigerator!  The cost of the service has not been announced, but your groceries will still cost the same as if they were purchased in store. The service will start in Pittsburgh; Kansas City, MO; and Vero Beach, FL, with inevitable expansion to Chicago and everywhere in America.  Are you willing to open your house OR FRIDGE to Walmart?