Like how we cover our cars. We don’t cover the tops; our magical healing rains not only prevent rust, but actually reverse the aging process. No, we cover the bottoms. Why? You really need to ask?
Well, I don’t know, actually; I should have knocked on the door and asked. But we could speculate. Maybe it’s an anti-gravity tarp, to prevent the tires from flat-spotting. Or it’s…help me out here; I’m already running out of ideas. I guess I’m not a true Eugenian yet. I’m sure the answer is utterly obvious and logical, like everything else here.