RE your second question "anyone here working on one?"
Yes, I am. The project can be followed in the link below
As you will see, I have taken a different route from most others, which I hope will bring benefits in both mpg, vmax and weather protection. Here is how it compares with a traditional "naked" motorcycle.
I firmly believe that any "streamliner" has to tackle the "short & high" profile inherent in all motorcycles with a traditional riding position. There is much talk of an optimum "fineness ratio" for low drag, which will always present a problem for "normal" motorcycles.