Taco Bell's sales are up. Jeffrey Greenberg/Universal Images Group via Getty Images Taco Bell is testing new AI features in its drive-thrus, with plans to roll them out nationwide. Parent Yum Brands, which also owns KFC and Pizza Hut, is expanding its use of AI across the board. Yum Brands posted a strong first quarter, led by Taco Bell's 8% same-store sales growth. Your Taco Bell drive-thru experience is getting tailored to you thanks to artificial intelligence. The fast-food chain is testing an AI-powered drive-thru menu in the US and plans to roll it out nationwide this year, parent company Yum Brands Inc. said Wednesday. The dynamic menu can change its layout, content, and visuals from car to car. CEO Chris Turner told analysts on the first-quarter earnings call that the new technology is all about "driving growth and getting a better consumer experience out there faster." It's part of the company's wider plan to integrate AI across its business.…