North korean army vehicles pictures

[Marcello]

Good, that not horse-drawn. But maybe they'd eat the horses...

Animals-drawn cart are used quite a bit in the countryside but a trailer of that size and weight is more simply handled by a tractor.
I have sat throught the whole militia parade, the equipment ranged from old but still usable stuff, like BM-24 MRLS and M-30 122mm howitzers to completely obsolete items such as Zis-3 and
KS-12 guns. Then again one can guess that if you have to equip several millions of part time militia troops on top of an already large army in such a country you can't be picky. In such context probably the contraption above makes some sense:the tractor can normally do its work and be called upon only as needed instead of having a full blown truck permanently removed from the civilian economy or army transport.