I am not a motorcycle person but reading this thread reminded me of the Britten and I pulled the book for a re-read (The John Britten Story). They were playing with carbon forks in the early days, homemade engine (no frame), full engine mapping (in the 1990's) etc. Nothing necessarily new but put together to make a unique package. The V1000 bike (attached) was known to pass the factory Ducatis down the back straight on its back wheel. Unfortunately he passed away at 45 so no idea what might have been.
Admittedly that was a V twin built for the Battle of the Twins and BEARS track racing in the '90's, but Brittens also set several world records including the world flying mile record (1000cc and under) at 188.09mph, the world standing start quarter-mile record (134.61mph), the world standing start mile record (213.51mph) and the world standing start kilometer record (186.24mph), all set in 1993 (stats according to MCN).
I don't have the book in front of me here at work but paraphrasing it they observed that the 'barn door fairing' (fully enclosed) referencing the aero-d-zero and aero-d-one earlier bikes, one of which had what look like wings over the forearm area, were slower than the open bike pictured here which is described as a torpedo (fairing, tank, seat) mounted on a blade (wheels, engine etc) and it was asssumed that this was because of turbulent wake off the fully faired bike that the ducted airflow in the 'naked' bike between the riders legs and frame, through the nostrils via the radiator (mouted in line) and directed by the lower splitter etc 'filled in'.
Not making any claims here - just thought it was interesting, and even more so that several road superbikes seem to follow this design today, 25 years on.