White Castle has introduced a voice assistant named Julia at select restaurants in St Louis, Cincinnati, and Merrillville Indiana, allowing customers to place orders using voice AI-powered drive-thrus. This technology aims to free up staff time and reduce labor costs, but faces challenges such as accuracy and job loss concerns. Despite these issues, White Castle plans to deploy the technology in over 100 drive-thru lanes by 2024, citing benefits like reduced stress and improved order accuracy. Other chains like Taco Bell and McDonald's are also testing voice AI drive-thrus, but widespread adoption remains uncertain.