This thing is absolutely amazing!
Now for something quite a bit more affordable that is amazing in it's own right.
They have these that you can run off of a three point hitch with your tractor too. There is even one crazy old bastard that rigged one up to run off of your truck axle with the wheel and tire still on it.
There are some clever bastards out there. Where were these things when I was a kid?
Busting rounds with a sledge hammer and wedges if I was lucky. Most of the time I had to use a splitting maul.
My back hurts just thinking about it.
Of course, there is some old school technology still out there but you wouldn't catch me near this damn thing.