This Merc appears to be a conversion within the standard van body but has a bubbled up roof. The Tu symbol on the plate represents Tubingen (Baden-Wurttemburg) in Germany.
VW pickup trucks are unknown on this side of the Atlantic, so this one will turn heads wherever it goes. The Amarok model has been produced since 2010 in Europe, but also in Algeria and Argentina, so is better known overseas. This particular unit is carrying a stylish Tischer Trail model removable camper body. It is carrying Swiss license plates. The AG prefix represents the Canton of Aargau in the North of the country.