HBO is doing a very unique promotion in New York City for the second season of their Prohibition era series Boardwalk Empire which premiers on September 25th. They are running a vintage 1920s subway train on the 2/3 line on Saturdays and Sundays from 12-6pm during the month of September, making stops at 42nd Street/Times Square, 72nd Street and 96th Street. This is one of the orginal trains that used to run on the Interborough Rapid Transit (IRT).