Any plans to include the Autopista systems for Chile and Argentina? They're wholly concurrent with the other numbered routes, but there is precedent for that (New Zealand).
In neither country does the autopista system seem to be a defined system. So probably not.
I fully agree but it's the very same with nzlmot "system". Or eursf system usage in northern Europe.
The reason is that the developer wanted to highlight freeways. Which is a fair reason because it's the interest of some / many users.