A while ago on "Extreme Engineering" on TLC, I watched an episode about a hypothetical trans-Atlantic tunnel. Basically, it would float underwater, be anchored by cables, and only tunnel into the ground when touching a coastline and then all the way to the station in a major coastal city. It would contain a vacuum inside it and the trains would be moved along at super-sonic speeds by repulsion-acceleration magnetism. Here's a link to the artistic perspectives shown on the show:
What I'm wondering is who would make up the engineering team that could actually design such a tunnel. Let's say you're the project manager for this colossal undertaking and are given the money to assemble the design team. Who would be on it?
Also, what engineering firms in the world could actually take on such a task? Again, you're the project manager, but this time you're told not to form the design team yourself, but to hire a world-respected engineering firm to do it. Who would you recommend the client hire?
Lastly, anyone care to take a stab at how much a mile of such a tunnel would cost and why you think it would cost that?