The video with the selfloading trailer is not that old. Estimated in 2019. My uncle is a farmer and now and then has borrowed exactly this selfloading trailer.

I used it to drive in a few acres of grass. Prop. we even wanted to buy it because the contractor wanted to get rid of the trailer. A few weeks after I last rode it, I was shown this exact video, which can now be seen here from 4:12.
The boss drove the car up himself with a loud mouth. The loading wagon was then sold as scrap.

That took place in Schleswig-Holstein, northern Germany. The contracting company to which the car belonged is LLL: Agricultural contracting company Langstedt or in german: Landwirtschaftliches Lohnuntern immediately Langstedt.

funny to see the vid here, but its true that most of the vids are not from 2021. i know a lot of them much longer.

Comment: - - I used to go with John deere and I was pulliing seeder and there was a crack on the pulliing sistem. I went from the little hill down sadentlly the tractor start to go like bit faster I turned around and the huge seed machine was turning and spining to a field.

I gat so lucky there was nothing else just a field I cant imegine there ware housing estate or some THING else in a worst case a person. I gat really lucky nothing happend just the machine have to be repaired people really must ve carefull whit this heavy machinery