These bikes are geared for a theoretical top speed of 105 MPH
Based on 44 HP @6840 rpm, someone onboard my weight 165lb, with two teeth up (17) on the trans sprocket and under ideal conditions 115 should be attainable
Mileage falls off considerably cruising past the motor's torque peak of 5100 if you want fast commutes
My wife's 2010 Toyota Yaris with it's larger o.d. tires (about 1"), 1.5, 95hp motor will indicate 110, so in actuality probably a bit more,
also more aerodynamic than they look I guess