A Walmart automated distribution center in Mexico. Bloomberg/Getty Images Walmart's investments in physical AI are paying off in terms of raw speed. The retailer's automated distribution network is better at organizing freight for faster unloading. US division CEO David Guggina said workers can now do in minutes what previously took them hours. America's biggest retailer is on a mission to become America's fastest. One key piece of Walmart's mission is automating its supply chain. The retailer