Cats on the Treadmill

I have a project going on where I walk 1/2 hour per day on the treadmill divided into three walks a day. I am entertained by cats while I walk. Margeaux is fascinated by the True logo going past. She also likes access to the window beside the machine. She has a ball in a circle toy right there too and it isn't unusual for her to play with that the entire time I'm on the treadmill. She walks the thin strip of edge on either side of the belt. Vegas is curious too. Both cats have ended up ON the treadmill with me fancy-footin' to avoid stepping on them. I wish they'd just learn to walk on it! I know there are videos of cats on treadmills at YouTube but not our cats. I am busy walking so I can't even snap pictures of their cute behavior!..