Elon Musk's Grok is moving from chatbot answers into your grocery cart. On June 3, delivery company Gopuff and SpaceXAI launched "Go," a Grok-powered personal shopping assistant built into the Gopuff app that aims to predict what you need before you go looking for it. It is one of the most concrete examples yet of an AI assistant that does not just answer questions but takes action on a user's behalf — in this case, assembling and ordering a cart.