DoorDash customers in Los Angeles might soon have their food brought to them by one of Serve Robotics ’ sidewalk delivery bots. The two companies on Thursday announced a multi-year partnership that would see them using autonomous robots to make deliveries across the U.S. The tie-up comes a week after DoorDash unveiled Dot , an autonomous food delivery bot built by the company that’s first being deployed in the Phoenix area. Unlike Serve’s bots, which mainly operate on sidewalks, Dot can ferry