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там цитата выделена, в ней написано что труба не имеет жесткой фиксации с опорами, температурное изменение ВСЕЙ трубы компенсируется на конечных станциях. Мдя. ну пусть строят. Но я слабоват во вражьей мове, может чего и не понял. http://genius.com/Spacex-hyperloop-alpha-plan-annotated

By building a system on pylons, where the tube is not rigidly fixed at any point, you can dramatically mitigate Earthquake risk and avoid the need for expansion joints. Tucked away inside each pylon, you could place two adjustable lateral (XY) dampers and one vertical (Z) damper. These would absorb the small length changes between pylons due to thermal changes, as well as long form subtle height changes. As land slowly settles to a new position over time, the damper neutral position can be adjusted accordingly. A telescoping tube, similar to the boxy ones used to access airplanes at airports would be needed at the end stations to address the cumulative length change of the tube.