It's a 2006 Mercedes Benz Actros Megaspace cab, with a 500bhp V8 turbo diesel, 16 speed fully automated gearbox (two pedals only) and everything you may need for life on the road: comfortable bed, fridge, climate control, etc, etc. It has a flat floor cab, ie, no engine hump in the middle of the cab, for ease of movement around the cab, and you could quite happily live in it!!
I've pulled two carnival floats with this last summer, and it received favourable comments from the crowds.
Dan.