i dont have time to watch the video, but I wouldnt go down the wheels route on any of my cats - my two spend the bulk of their time on my bed, and wheels would prevent that - plus the carrying it round, unless they are very light, that is putting more of a strain on their other legs and heart. And as for nappies on pets, no way, that isn't natural - mind you, I couldnt do with Molly, I can only touch her on her terms, nail clipping and flea/worming is hard enough with her. I think it is a lot different for dogs than cats.