Subway Escalator Buckles at Height of Morning Rush, Terrifying Some Commuters "This is a very rare and troubling thing to see, we’re glad there are no reported injuries, and a full investigation ...

“Escalator step height greatly varies when an escalator is stationary, especially at the top and bottom, creating a potential tripping hazard,” said Patrick O’Connell of KONE, ...

Well, a 30-foot tall escalator can apparently cost about $200,000. Ours is 9,418 kilometers high. Setting aside the cost of supporting an escalator in midair, that’s a cost of about $206 billion .