What is The Very High Speed Transit [VHST] System?

"The Very High Speed Transit or “VHST” concept was put forward some years ago in response to the search for a pollution-free transport method that could operate at speeds competitive with aircraft. The general principles are relatively straightforward: electromagnetically levitated and propelled cars in an evacuated tunnel."
https://www.theblackvault.com/documentarchive/the-very-high-speed-transit-system-vhsts-august-1972-la-to-ny-in-21-minutes-14000mph/

"In 1972, Robert M. Salter, lead scientist with the Rand Corporation, announced during an interview with LA Times science writer George Getz, that a high speed system could be built using existing (1972) technologies. He also stated that the system should be built for environmental and economic reasons. What kind of speeds was he talking about? Try 10,000 MPH! (Read this June 11, 1972 LA Times article).

On August 2nd, 1972, Salter wrote Rand document P-4874. The publication was titled, "The Very High Speed Transit [VHST] System." The 17-page report detailed the technologies involved, possible attained speeds, aspects of economic and security benefits, and potential routes. This document reported achievable passenger speeds at 14,000 MPH!

By 1978, this proposal grew in dimension and attracted serious consideration by Continuity of Government officials, intelligence departments and U.S. military command. That February, Robert Salter submitted report number P-6092, titled, "Trans-Planetary Subway Systems: A Burgeoning Capability." This report updated route maps and extrapolated further upon the economic and technical considerations in planning the system."
http://www.reptoids.com/Vault/AllNewArticles/Tunnelsandshuttles.htm

"Description of a very high speed transit (VHST) system operating in its own rarefied atmosphere in evacuated tubes in underground tunnels. Most cases considered took less time to go coast-to-coast (e.g., 21 min) than it takes an aircraft to climb to an efficient operating altitude. VHST's tubecraft ride on, and are driven by, electromagnetic (EM) waves. In accelerating, it employs the energy of the surrounding EM field; in decelerating, it returns most of this energy to the system. Tunnel systems would be shared by oil, water, and gas pipelines; channels for laser and microwave waveguides; electric power lines including superconducting ones; and freight systems. Environmental and economic benefits are substantial, and the technology for building and operating the system exists."
https://www.rand.org/pubs/papers/P4874.html

"As some of you might know the U.S. is rumored to have a secret highspeed "VHST"(very high speed tranist system).It is used from anywhere to shuttling workers around secret underground bases,to use by favored corporations,shadow government personal,black ops,etc.It is rumored to cruise at speeds of 14,000 mph!!Making a trip from L.A. to N.Y. in 21 minutes!!!"
http://www.abovetopsecret.com/forum/thread344006/pg1