I'm shocked by how many people have the intuition that a robotic solution to DoorDash will never work because customers will refuse to walk the 50 feet to the curb to retrieve their order from the robot.

Obviously if a person is delivering the order then customers want it delivered all the way to their door. But if the robotic version is significantly cheaper or faster (which it will be) the vast majority of people will make the sacrifice of walking down their front steps.