I think the I think the Nevada Interstate map http://beamng.com/resources/nevada-interstate-prequel-to-so-cal-interstate.922/ could possibly do the trick. You would have to get permission from the guy that made it though.
This is my first time on any forum really, but I am having trouble with Chapter 8. It will load until it says 'teaching AI', and then it crashes and i can't exit or access anything else on my PC.
I would expect it not to work, considering that the update is still causing a lot of issues with my code. I did not expect it to crash, and that seems rather strange. Until I can fix it, I can only suggest not playing it currently. I am trying to update my code but not had much luck yet, Sorry for the inconvenience