A variant called the Built-in Hydrostatic Transaxle (IHT) makes use of only one housing for the two hydraulic elements and gear-reducing features and it is applied in certain mini-tractors and trip-on garden mowers. Tiny industrial automobiles for instance gentle tractors typically utilize them, and you see them on snowmobiles also. https://gearbox-cvt53074.ampblogs.com/details-fiction-and-gearbox-cvt-69536266