I am scratching my head now thinking of how to put a hydrostatic drive in, i don't think you would ever get one into a normal chassis but it could be done with a custom chassis, engine, and drive. It would be very reliable but it would have to be a workhorse machine because it would be way to heavy for anything else, but what the hell there is a market for that too, i think we will see it sometime in the future but i know i won't be running to get one. interesting though!!!