The Harwich-Felixstowe Tunnel

 

About fifty years ago, I read a book review of the greatest hoax of all time, The Harwich Felixstowe Tunnel, which would open up the East Coast road. Apparently, it had taken place in the Edwardian era and they had even got a special train to come up from London carrying the Lord Mayor.

Now looking back as I can't find any reference to this, was the Tunnel the hoax or was the book a double bluff.

Perhaps someone could enlighten me.