A trans-Atlantic underwater tunnel able to support a hyperloop system is being tested by the Maritime Research Institute Netherlands (Marin), with researchers hoping for a consortium to develop the project and highlight that this mean of transport can act as a less polluting alternative to air travel.
In fact, the trial of the 140 meter (460 foot) model tunnel is taking place in one of the research basins of the organization, aiming to see how it responds to wave activity, in order to determine...
https://safety4sea.com/watch-researchers-test-transatlantic-underwater-hyperloop-tunnel/