From the report: "...with capsules departing as often as every 30 seconds from each terminal and carrying 28 people each. This gives a total of 7.4 million people each way that can be transported each year on Hyperloop."
http://books.google.com/books?id=DenWKRgqzWMC&pg=PA67&lpg=PA...
These arguments always seem to presuppose that the status quo is optimal, and ignore the limiting cases.
Except that the chairs on a high speed lift have to be so much further apart, so you're not actually getting more people to the top in the same unit of time.
Source: I'm an Engineer and worked on fixed grip (slow) and detachable (fast) chairs and gondolas for 5 seasons.
[1] http://www.bart.gov/docs/barttimes/BTimes0707.pdf
[2] http://cahsr.blogspot.com/2009/10/la-sf-nations-second-busie...