Galaktek has built a series of MOCs depicting Mercedes-Benz firefighting trucks throughout history. The trucks, ranging from about 1912 to 2012, are build in a LEGO Set style, being sturdy and playable. They even have some extra element for additional playability.
For more photos, see the links to any of the trucks:
– Benz Feuerwehr-Motorspritze (1912)
– Mercedes-Benz L 6600 (1950s)
– Mercedes-Benz L 322 (1959)
– Meredes-Benz Unimog 406 (1960s)
– Mercedes-Benz 1422 (1970s)
– Mercedes-Benz Atego (2005 and later)