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Considering the overall area of countries and the size of the many large cities included in the map, the JCV file is not very big at ~36MB. Try simulating a route outbound from a very large city along a major arterial multi-lane road [freeway, expressway] and scroll though the route. But don't expect to see a lot because very few major interchanges/exits have a Junction View even in US and the 3xxx JVC for 2014.20 NA is ~450MB. To put it in context, US & CA have a similar sized total population to SAm [even when you discount Bolivia & Ecuador] at around 350 million.