I ordered 2 Flows during the Black Friday sale and they should arrive in Mid-December (allegedly). I don't understand something about the specs. Everything appears to be exactly the same on the Flow and the Sport models - same battery, same motor, same torque rating, same gears, etc. Why is the Sport rated Class 3 28 MPH and the Flow is Class 2 20 MPH? I don't think it actually matters to me as I envision 20 MPH being more than enough.