Hey Glort....
Well spotted re the accent!!
Went and looked at it again - The best I could come up with judging by the land is somewhere, probably on the west side of the Karoo....
Occasionally, due to the high cost of line/rental, farmers that have power almost at their doorstep do not tie into the grid for irrigation, particularly if it is only for occasional irrigation or to fill a dam for a few livestock. It is not unheard of, by any means, to have a farmer that will transport a pump/engine around his farm and fill the dams on demand, in fact, my housemate who had a smallholding on the outskirts of our town used to do just that to get water from the dam in the lower sections up to his reservoir next to his house... But he used a much smaller Yamaha style portable centrifugal pump... About once or twice a week....
(And no, that thumper in the vid....Its not one of mine....Lol)
Cheers
Ed