So Elon Musk's Hyperloop Is Actually Getting Kinda Serious

So many submissions, so little comment. Does no one have anything to say?<p><a href="https:&#x2F;&#x2F;news.ycombinator.com&#x2F;item?id=10105003" rel="nofollow">https:&#x2F;&#x2F;news.ycombinator.com&#x2F;item?id=10105003</a><p><a href="https:&#x2F;&#x2F;news.ycombinator.com&#x2F;item?id=10095595" rel="nofollow">https:&#x2F;&#x2F;news.ycombinator.com&#x2F;item?id=10095595</a><p><a href="https:&#x2F;&#x2F;news.ycombinator.com&#x2F;item?id=10093968" rel="nofollow">https:&#x2F;&#x2F;news.ycombinator.com&#x2F;item?id=10093968</a>

&gt;near supersonic speeds<p>Just to nitpick I think they refer to supersonic speeds in standard pressure. The speed of sound in very low pressure (&quot;vacuum&quot;) is much lower and they probably far above that.