[the_watcher]

This is a valid concern, but it's definitely not one that should impede efforts to construct one or prove its viability. For one, hyperloops have a lot of potential value for shipping. For another, most of the designs don't seem to involve a huge number of people in on point at once, and it wouldn't be hijackable in the way than an aircraft is. To be honest, the simplest form of transit to use in terms of ease of access combined with potential destruction is just a car or bus, right?