Currently a huge work in progress, could take months (since I'm alone) and the map would crash a lot due to GTA:V's silly limits. I've gotten some progress extracting the map due to a zenhax tool that made it possible. Credits to daemon
Using XNALaramesh's blender plugin, I was able to import these Crew 2 exported/extracted ASCII files/models into Blender and export them as .xml's using Sollumz plugin. By the way, certain cities can be ripped from the game itself. According to daemon, The whole USA map is split into 20x12 areas (0,0 is south west corner). For the first game, its 19x11 areas. Each area is square 8x8 sectors. I need a lot of help with this project in finding sector areas and coordinate areas. I don't seem to have enough free time on my hands. Here are some trees/vegetation successfully exported from The Crew 2.
To help me on this journey, visit my development discord to see it's progress: Discord