Oh Yeah, how do we know there is a "scooter" under there, it might actually be a motorcycle!!
The question's I have are; is it breathable fabric, and where are you parking when you use it. If you park where the ground is damp, non breathable fabric will trap moisture and cause corrosion more rapidly.
Also note, squirrels (rats and chipmunks) will feel much more comfortable with a cover over their winter quarters.