Today, the Chicago River runs green, 200,000 people will march down Fifth Avenue in New York City, and just one person will carry an Irish flag a couple of blocks in the smallest St. Patricks Day parade, which is held in Enterprise, Alabama. And, at least for the day, most everyone will be a bit Irish, even if it’s only from eating corn beef and cabbage and/or drinking green beer. It’s only fitting that we feature some Irish trucks: O’Macks, O’Peterbilts, O’Kenworths, O’Volvos … Happy St. Patrick’s Day!