The Very High Speed Transit System (VHSTS), August 1972 – LA to NY In 21 Minutes / 14,000MPH

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Background
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.

Document Archive
The Very High Speed Transit System (VHSTS), August 1972 – LA to NY In 21 Minutes / 14,000MPH [20 Pages, 1MB]

I wonder how the acceleration is made safe?