Hyperloop, the superfast 'vacuum train,' is coming to China
https://edition.cnn.com/travel/article/first-hyperloop-in-guizhou-china/index.html
It's dubious that vacuum train will be able to begin commercial service.
Though those who have had something to do with vacuum technology, it's difficult to create room where air won't be leaked to an extent even in laboratory size.
And, what is worse, in an emergency state, how can passengers get off the train between stations?
Without solving such problems, it's impossible to make the system begin passenger service.
