Mad chemist, you are missing the point by miles!!!! It's a great bike. Ticks all the boxes. Why?
The design was by a modern day genius, Graeme Obree's determination, drive, single-bloody-mindedness to be the best in the world (on a shoestring budget may I add) is a story that inspired a movie. The bike was a big part of that success story - Homegrown, home built, and using parts he could find cheaply that would meet his design thoughts to be aerodynamic and cut down the frontal area that hit's the wind. I was lucky to be a very small part of that, as a supplier to his local bike shop.
It's a great bike because it's Inspirational, Iconic, Inspired and won the odd world record...... Against another great rider, a certain Mr Boardman who had massive financial backing by comparison.
Why ain't we riding one? Because the UCI banned it, it wouldn't be safe on the roads (track world records remember) and there is only one 'Old Faithful'