After four decades carrying millions of New Yorkers, 44 of the city's subway cars are now home to millions of fish. The worn-out cars were dumped on Friday into the Atlantic Ocean, 21 miles off the Maryland coast, to create an artificial reef, designed to attract fish for the state's lucrative sport-fishing industry. "These reefs provide quality habitat for marine life off our coast which benefits not only the environment but also local businesses," said Ocean City Mayor Rick Meehan.