 The costumed Smiley cookie made appearances throughout the Pittsburgh region and travels in a 1974 DIVCO Milk truck, which is now a branded-van known as the "Cookie Cruiser".On December 31, 2010, the Eat'n Park corporation filed a federal lawsuit in Texas against Crumb Corps for infringing on the trademarked cookie.The late singer songwriter Mac Miller, of Pittsburgh Pennsylvania, paid homage to the iconic cookie in 2010 by singing about it in his song “Knock Knock.” The line, which refers to being happy and smiling all the time, says “Keep a smile like an Eat’n Park cookie.”