Graeme, there was a passing mention of a "burnelli.com" (
http://www.burnelli.com ) site in Pope's post.
I gave it a cursory look and it seems very weel done.
I've always liked out-of-the-box thinking and designs, but I wonder... when a design which is supposedly this good is never translated into reality then there might just be something wrong with it... As of now, I can think of nothing.
We'll see if Boeing will finally accomplish that... I, for one, am curious about it