Culture & Events Plenty Urban Picnic Plenty Mercantile invites guests to visit the great outdoors in the heart of Automobile Alley via a chef-catered rooftop picnic. by Photo by Justin Avera|May 27, 2014 Share Natural, locally sourced food, drinks, live music and fun Click here to see more and purchase photos. Stay up to date with the latest news delivered straight to your inbox. Email Sorry. You must have JavaScript enabled to fill out this form.