To foster new product introduction, in 1986 Kentucky Fried Chicken opened the $23 million, 2,000,000-square-foot Colonel Sanders Technical Center. In addition, the company began testing oven-roasted chicken through multiple-franchisee Collins Foods; further test-marketing of home delivery was undertaken using PepsiCo's successful Pizza Hut delivery system as an example. By late 1986 Donald E. Doyle, succeeding Mayer in the post of Kentucky Fried Chicken's U.S. president, inherited the task of developing new menu items.