Exactly, in most cases it's basically just enough to keep the motors from being fouled with dust and debris. You could probably imagine an Uber driver, or simil

Exactly, in most cases it's basically just enough to keep the motors from being fouled with dust and debris. You could probably imagine an Uber driver, or similar livery driver offering hypoallergenic rides during the height of allergy seasons in various cities. Japan in particular might be all over this; they have a monstrous allergy season with people wearing full face gear!