Critters and soldier, you are both right.
This is hydralic drive powered by an 18 hp Kohler.
They have an interesting web site and offer many attachments.
There are a number of videos on you tube, many by a young man in Colorado who Truck Farms( today they would say Market Garden). I would like to have one, the ability to have a cultivator right in front of you would allow you to be very precise.
The Allis G would be almost as nice but only a little over 2900 were made and collectors have scarfed up most of the survivors.