I added dirt to the driver figure and the driver’s cabin:

The dirt is made from pigments, oils and enamels. I also like the look of the seat bench, the dust in the seams is made from enamels, and the patina from oils. The base color is acrylics.

Then I fixed the driver to the bench:

I also continued to paint the head:

The frame of the Opel is also finished. I added the rear leaf springs, and also snow chains on the rear wheels (this can often be seen on historical pictures of vehicles driving through mud):