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The pumped air is also used to create an air cushion around the pod to keep it suspended at high speeds. Also, solar panels line the top of the tube so that it is self powering.

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If this is going to be running above ground, how do they purpose to find space to even build this?

http://mappery.com/maps/Los-Angeles-California-Transportatio...

My only guess would be to build it vertically. . which is were everything is going anyways, right?

Pylons above the existing I-5 freeway.

It would not be built anywhere on the map in your link. The LA station is in Santa Clarita which is further north and west. It seems to me that he has laid out a route that avoids as much as possible dense urban areas. Even his extensions out to Vegas and San Diego by pass most of the urban development in the LA basin.

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