Carlos Cebrian, owner and chef of the Silvestre organic and Japanese food truck, stands next to a customer at his truck in the Street Food Center in a park in the Roma neighborhood of Mexico City, Mexico, on Monday, Aug. 31, 2015. The Street Food Center, a new project by OK Food Trucks and the International Association of Mobile Franchises, opened earlier this year and features a variety of international cuisines. Photographer: Adriana Zehbrauskas/Bloomberg via Getty Images