It does look flippin' cool but it's chances of being built are virtually zero aren't they?
This type of idea has been kicked around the world for over 20 years. I doubt if even a single prototype has ben built. The major flaw in the design is if you have a wreck inside the tunnels that need emergency crews, you can't get them to the accident scene easily. Add to that you'd need the permission/pay off every land owner along the corridor for the land usage rights. That alone can sink a forward thinking project like this.

I see a BIG windmill power generators along the route to provide power as well as wind..not just sealing ppl in to give you a windless 40km ride but rather a 40km/h tailwind regardless of the direction of travel.

From such a system you can also create a pneumatic/electromagnetic traincar system allowing for mass transit to be hung under, over or even around the tunnels depending on the design. All sustained by naturally renewable resources.