Snow Covered Diesel

I need some information. Could someone please tell me how the snow covered Diesel was sold. i.e., By himself or in a set, or with just a single wagen or truck. Thanks in advance.

[Super]

For some reason, I have it in my head, that he only came with one black, snow splattered, troublesome truck but I could be mistaken. Hopefully our experts can help out for sure especially with pictures.

[Ucwepn]

   

[Super]

There ya go!

As hinted in the image, it's actually meant to depict quarry dust, which makes sense considering the stone truck.

Thanks Ucwepn one and all.