Reminders about the initial criticisms of the Hyperloop plan, which I do not see rebutted anywhere in this article:<p>* It&#x27;s riotously expensive, far more so than the white paper indicates; simply building the elevated track overpasses at the costs listed in the white paper would imply a revolution in civil engineering.<p>* Door-to-door transit times are within the same ballpark as HSR, because it&#x27;s not possible to terminate Hyperloop tracks downtown in LA or SF; ROW issues put them roughly an hour outside each city.<p>* Hyperloops will have approximately the same security concerns as airplanes --- they fail more dangerously than normal trains --- and so will have TSA-style security checks, further slowing travel.<p>* At the speeds Hyperloop advocates claim, there is virtually no tolerance for bends on tracks without inducing nausea.