The discount warehouse chain plans to use these robots, designed by robotics company Simbe, to check store shelves multiple times per day to ensure products are in-stock and in the appropriate sections. Lowe's began testing 400-pound Knightscope K5 robots in Philadelphia in February and plans to utilize them in Washington state, North Carolina, California, and Washington D.C.Back in 2016, Lowe's deployed the autonomous LoweBot to search for out-of-stock shelves and help stores replenish inventory. Learnings from these early pilots have fueled further testing to unlock a future in which products are never out of stock, Lowe's Innovation Labs says on its website. Automated grocery systems like Alphabot are estimated to pick and pack orders as much as 10 times faster than a human. Walmart stopped using the more than 6-foot tall robots during the height of the coronavirus pandemic after finding that humans could do the same work for a cheaper cost.The new fulfillment centers employ over 4,000 workers, including brand new tech-focused employees like control technicians, quality audit analysts and flow managers.Marty's primary purpose is to roam around the store autonomously and point out hazards for store staff to clean up.A shopper spotted the robot roaming through the parking lot and posted a video of the brief excursion on YouTube.Through Serve Robotics, 7-Eleven has been testing self-driving robots to deliver some of the convenience store chain's most iconic foods and snacks in the Los Angeles area for a few months.The warehouse club rolled out the autonomous machines in partnership with Brain Corp, an artificial intelligence company.