Mr Pig said:
That's what I thought, idiotic. A solution looking for a problem.
I gather they have some aerodynamic advantage in HPV racing, but I don't think they are seriously intended for transport. Terrible in any type of traffic, if you have to crane your neck up to see.
So probably the bike equivalent of an F1 car... The 'problem' is just how to go even faster. Whether you reagrd that as a valid problem, I suppose, depends on whether you are interested in competition.
Of course, there is just the spirit of innovation, and fun. There is no point to a lot of modern inventions, except the fact that some one found it could be done, and it was fun.