McDonald’s has begun testing new mobile ordering and payment functionality at 29 of its restaurants in Monterey and Salinas, California. It will expand the pilot to another 51 restaurants in Spokane, Washington, on March 20. The company will run multiple pilots to gather customer feedback, work out any issues that arise, and streamline integration with its IT systems before rolling out its updated mobile app to nearly all 14,000 restaurants in the United States — as well as 6,000 others around the world — by the end of the year.