Walmart's latest tech trick is delivering groceries via DoorDash. Except instead of this being a Walmart offering, it's actually being led by DoorDash according to TechCrunch. End users shouldn't notice a difference, however. Logging on to the Walmart website, you can place an order, choose delivery and then your bread and produce will show up at your door. And only then will you discover it was DoorDash, not the store itself making the delivery. The pilot program is live in Atlanta currently, with no word on if or when there will be an expansion.