Great idea, but in my town we already have it.
Matter of fact, we have 4 small grocery stores that not only deliver, if you aren't home they also put the groceries away in your cupboards!!
I remember my grandmother having that service in Ann Arbor. I don't think that that woman ever set food in a grocery store. That might also explain why she never had anythink other than Pepperidge Farms products in the home.