This is fantastic technology. However, like all man made things, nothing is perfect, and all it takes is some mechanic to forget his wrench while doing routine maintenance in this pod like tunnel structure to cause a catastrophic chain reaction like event that will cause havoc. Secondly, the location of the proposed initial trial, the Middle East. Have u ever heard of Terrorism, This is the perfect ISIS target. I think the first Hyperloop should be built in a stable G8 country. But the UAE, has the $, lots of cheaply produced oil. Anyway, Lest We Forget. We should be thankful we live in a free country. Stop and thank a veteran today for your freedom. Spot