(May 3, 2013) MILWAUKEE — Throughout 2013, millions of Harley-Davidson fans around the world are celebrating their shared passion for freedom, self-expression, adventure, and the stories that unite them during Harley-Davidson's 110th Anniversary year. This Cinco de Mayo , thousands of Harlistas are gearing up for official 110th Anniversary celebrations by taking to the open road, seeking adventure, camaraderie and the achievement of the American Dream.