Can't you just cover the wheel? Certainly I would think the sides would be easy to cover; the tread itself might be more difficult, but unless I'm missing somet

Can't you just cover the wheel? Certainly I would think the sides would be easy to cover; the tread itself might be more difficult, but unless I'm missing something, having the tread be open is not a required part of this design. Basically I'm imagining something that looks like a regular tire, but inside has the tweel. In addition to the tweel's benefits, you also don't have anyone even notice you're using something different.