All of Andy’s Bonnie’s toys are back for a new adventure with Toy Story 4, another installment in Pixar’s beloved franchise that follows the gang on an eye-opening road trip. Ahead of the film’s release next week, we sat down with two Pixar veterans—production designer Bob Pauley and supervising technical director William T. Reeves—to found out how technological advancements have allowed the Toy Story franchise to evolve.