The trailer:

Wilson Livestock Multi Axles Trailer mod. From looking at the pictures you wouldn't believe, just how long that trailer is. If you like a challenge, haul one through Scandinavia with all those small roundabouts, or take mountaineous roads with lots of traffic, because you WILL need two lanes. Leaving a motorway is a matter of inching your way up through the tight bends, i.e. if you want to avoid damage. This trailer's a challenge and great fun.

The truck:
Obviously a Volvo VNL 670. There are quite a few different 670's mods out there. I especially like this particular one by Martinez (found it on etsmods.net) because of its fantastic motor sound and comparatively little understeering even with a real heavy load to pull. I'm a big fan of american and russian trucks, but this Volvo is currently my absolute favourite.

Nice combo!