Spotted over at The Drive: This Mercedes-Benz LG-1519 six-wheeler, modified by a Brazilian firm called Engenheiros Especializados SA, or Engesa, with their special "boomerang" suspension. With low angles of approach and departure and Engesa's system fitted to the rear wheels, previously impassable obstacles become mere speed bumps:
Engesa has nicknamed this vehicle "Mamute" (Portugese for "Mammoth.") And as you can see in the video below, the Mamute can pull the same trick both forwards and backwards:
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For you off-road nerds, there's a little history on Engesa here.