Fortunately, those big steam lines are only in certain parts of Manhattan, for the skyscrapers. They wouldn't take out the main water tunnels. But as far as an earthquake, with close to 100 miles of tunnels extendig north to the Catskills, we would be hurtin'.

One lesson learned from yesterday's transit disruption, if you are bugging out of NYC, the only way you are getting out is on two wheels (bike or motorcycle) or on two legs. Maybe by boat, but first you have to get to the water.