Well I'm "Computer Impaired" since my old Acer died a week ago, so it looks like I've almost missed the thrust of another interesting thread, but anyway, in my humble opinion, the original "Worlds Stupidest Chopper" bike is in fact a very practical solution to a problem that has bugged the "Chopperisti" for many years, that is, frontal vision.
You see, in the past, most chopper guys sitting as low as they do, can't see that well over the top of the tank, so the builder of this bike has overcome the problem by building it so that he can have a clear forward vision of the road by raising the tank above his eyeline.
Not perfectly practical in it's execution perhaps, but clever thinking, nonetheless! I'm currently working on some rose-tinted periscope goggles designed for cafe racers with low handlebars so that they can actually see ahead without the agony of constantly holding their heads at right angles to their spines, so all you "Carpy-philes" stay tuned, the revolution is coming! Cheers, Terry.