Hi, I really like the ETK Driving Experience Center but it's way too small. It'd be so cool if it'd be a complete map.
I mean, it's a map that not many people use. I mostly use it for drifting but other than that its basically not that needed for and extension. But maybe the developers are planning something.
Honestly it depends on how much was added. If there were several custom 3d assets and a lot of additions to the map that makes it the size of Roane county, might be thousands. But if its just adding a few roads then maybe 150 max