Years ago, there were two boys that used to cut and split fire wood such as the pile in your picture. they used a circular saw mounted on a small trailer, and they ran the saw from the back axle of the Pinto car they hauled the trailer with ( took wheel off and bolted up the "PTO" to the 4 studs. After every thing was cut to length they went home then brought back a gas/hydraulic wood splitter, home made as well.