Green Energy

I would think the drag is considerable.

I would also worry about stability in a strong side wind.

As a result, I would not like to ride the 2-wheeled version in strong side wind. The 3-wheeled version looks OK, but also suffers from drag.

Besides, to generate power from wind while parking, you would have to choose your parking direction. But you can't always choose the parking direction - location dictates it often. Toppling over while parked would be a definite thing to expect with this setup.

That kind of kit on two-wheeled vehicle looks severely half-assed. They should have thought more steps ahead.