Very slick and close to a pure airfoil form. 200 mpgUS should be possible. Crosswinds will be tough with such a pure design. You can use a spoiler up the nose and will still probably need to vent across the width in front of the radiator and behind the engine where your feet need to be free anyway.
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And adding side area below the cg on the roll axis will actually help the bottom of the bike to translate over so the bike retains more of it's trail induced tendency to automatically lean into side winds. Modern race bikes have body work streamlining the exit of the front tire and attack of the rear tire right down to the point where it is just shy of dragging on the ground at full compression.
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