What happens to New York City subway cars after they're been replaced with shiny, new ones? They get dumped into the ocean for the amusement of fish and adventure divers, that's what. Over the weekend, South Carolina environmental officials dumped 44 old cars into the water, the fifth time "retired" subway cars have been used for such a purpose in as many years. The exciting footage of subway cars getting cast off to the bottom of the sea is on your left. [WBTW]