Trans-Atlantic vacuum Maglevs?

The Maglev trains minimize the friction arising from the physical contact between trains and railway lines and thereby increases railway speeds. Now, here comes news of a project to achieve super-sonic train speeds by eliminating the air and thereby air friction from the trains path.

Accordingly, a vacuum Maglev is being proposed at a cost of $88-175 bn between London and New York. The magnetically levitated train would run at speeds of upto 4000 mph in vacuum tunnel submerged 150 to 300 feet beneath the Atlantic's surface and anchored to the seafloor.