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Mar 30th 2012 6:58AM Apparently you don't get out of your home country much. Train tracks have long crossed multiple international borders. Custom checkpoints are setup at airports and seaports all over the world. It's entirely feasible to setup the same infrastructure for the ETT. To your other point, existing transportation vessels like airplanes and cruise ships require constant maintenance as well but they operate just fine.
Mar 30th 2012 6:46AM How do you propose an unenclosed system of rings will be able to create the airless environment needed for the frictionless travel in order to reach those speeds? It sounds like what you've described is closer to a maglev which is already in operation.