After two years of testing, McDonald’s has ended its partnership with IBM to develop an artificial intelligence (AI)-powered drive-thru system. The collaboration, which aimed to change the fast-food ordering process by replacing human workers with voice-activated chatbots, had been a closely watched experiment in the industry.The fast-food giant’s decision to remove the technology from over 100 restaurants and seek a new partner underscores the challenges and opportunities presented by AI-powered voice orde ...