Variety of roads, challenges of stream crossing bridges etc. it is incredible place, one of the most beautiful places on earth, this is just one video where one can see variety and challenges, searching tranz amazonia on YT gives a lot of stuff to spend hours on doing 'research' : Living there must be real pain, but to have such variety of roads from long straight paved roads to narrow curvy dirt roads, it might be real fun map to drive in. It is pretty much like what Hopper needs to really stand out, well just my opinion of course.