Thats a high tech catmill with a rubber track.I was going to build one but a treadmill did all that I needed.
I remember John of STP had a catmill setup and one time we were out in his yard he said watch this,he had an old cat that was hanging around and he picked him up and put him in a basket and hooked Buck up to the mill.Buck spun that thing around super fast,John said watch the cat,I'll be darned if the cat didnt fall asleep after a few laps.He said the cat loves it,so did ole Buck,lol.