This film its just a little joke. Many vehicles -many uses. Tractor is used to plow the field, all-terrain car used to efficiently off-road move. Be aware of the differences. Different gears, tyres, motors and many things... remember that! This is not sugestion who is better. I like all vintage, off-road machines.
NJ Purling:The Ursus looks like a clone of a Lanz Bulldog. Perhaps the steam is because the engine does not have a water pump to force water to circulate through the engine block. Thermo-syphon cooling looks to be inadequate, but if the radiator is kept full of water a bit of steam doesn't matter. it's an obvious indication that it has been working hard.