Just doing a high speed cruse , windshield, sitting-up , grinning , leading with a Wing and a couple Harley Trikes following ... and looked down at the GPS ...
... Then slowed down ... don't know how fast it would go but 100 mph might be in reach if the ease of 88 mph is any indicator.
With/if : no windshield
tucked down between the handle bars
legs wrapped around w/feet wrapped around the tail-light
no unnecessary wind resistance
Yea 100 + , but not sitting up on it with a windshield , and knees sticking out .
Garmin