speeds. fighter pilots travel up to three thousand kilometers an hour but they train hard to be able to withstand that stress on the body so will hyperloop travelers also need to carry out a special training programme the problem lies not in the speed but the acceleration during a sense in this sense an aircraft is constantly accelerating or braking those g. forces are punishing for the body. the hyperloop by contrast accelerates relatively smoothly and then maintains its speed much like an airplane on stilts but this infrastructure comes at a price a hyperloop tube costs around twelve point four million euros per kilometer to build. not to mention we already have a form of mass transportation that's been around for more than a century over the years railway infrastructure has been steadily updated and