Rail's city-center-to-city-centre service is also becoming an increasingly attractive alternative to flying.

CNN: The high-speed rail revolution

The third rail, of course, is a metaphor for any issue so controversial that it is untouchable, like the electric rail often found in the center of a railroad track.

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The Long Island Rail Road has a stop at Barclays Center.

WSJ: Counting Down the Days Til Brooklyn

Yet the car's body is 25% stiffer than its predecessor because key parts of the frame--like the center post that supports the car body during side collisions and the roof side rail that connects the sides of the roof--are made of ultra-high-strength steel created through a process called hot stamping.

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