So Elon Musk's Hyperloop Is Actually Getting Kinda Serious

So many submissions, so little comment. Does no one have anything to say?

https://news.ycombinator.com/item?id=10105003

https://news.ycombinator.com/item?id=10095595

https://news.ycombinator.com/item?id=10093968

>near supersonic speeds

Just to nitpick I think they refer to supersonic speeds in standard pressure. The speed of sound in very low pressure ("vacuum") is much lower and they probably far above that.