Two levels underground beneath 13th and Market Street, trolleys speed through every few minutes. It is difficult to distinguish one from the other until you see Gary Mason’s trolley. In the spirit of “Brotherly Love” and Valentine’s Day, Mason tricked out his trolley with hearts, lights, and flowers galore. It’s something he’s done since 1993, but his display has grown tremendously since then. The rose-tinted ambiance is blended with a nostalgic mix of oldies and love songs that Mason shuffles through on his iPod Nano. Morning commuters can look for Mason’s sweet ride around Valentine’s Day, but he also decorates for Halloween and Christmas.