I admire your optimism, Genghis, if you hope to pursue anyone to build even 79 miles of tunnels. Remember the Channel Tunnel debacle? That is only 22 miles.
Maybe Elon Musk will provide his solution:
https://en.wikipedia.org/wiki/Hyperloop
It might be attractive to him, being a very high visibility project. If he were to, there might be a knighthood in it for him.