It's fiction, but still a fun read: Harry Harrison's A Transatlantic Tunnel, Hurrah!

In Which Our Hero, A Descendent of the Traitorous George Washington, Builds a Railway Under The Sea, Wherein Passengers Travel To The Court of Her Britannic Majesty In Atomic Powered Comfort.

http://www.amazon.com/Transatlantic-Tunnel-Hurrah-Harry-Harr...