Keeping my headlight on makes me go faster and operate with greater fuel efficiency.
The light beam splits the air molecules lowering my friction/drag. I am more aerodynamically efficient slicing thru the atmosphere at this elevation.
Byy lowering drag & increasing my speed/fuel use co-efficient I effecting a significant fuel saving while increasing speed.
Also its less wear on the outer surfaces of my 'scooter which will lengthen its operational life.