US tunnel leads nowhere - for now
Taking shape in New York is a 185 million US dollar (£109m) government -funded tunnel that leads to nowhere.
The 800ft-long concrete trench on Manhattan's West Side could someday lead to two new commuter rail tunnels under the Hudson River to New Jersey. But that will happen only if the billions of dollars needed to build them ever materialise.
The access tunnel is being built now because the massive Hudson Yards development with six skyscrapers will soon rise on top of it.
US Senator Charles Schumer helped push Congress to approve Superstorm Sandy relief money for the flood-resistant access tunnel, which is expected to be finished in autumn 2015.
Two century-old tunnels connect Penn Station and Newark.