Nevada Interstate isn't an overwhelmingly huge map like Desert Highway or Roane County, but it is fairly large and has a 13.x mile loop of interstate highway that doesn't know it's not a race track. The AI on Roane County should be pretty flawless as it was just updated with improved AI for the Traffic Tool, updated bridges, and new highway textures that I custom made. Roane County was actually supposed to be only a concept, a test bed for large open worlds but it worked. Roane County is just a few % bigger than Desert Highway, but has much more roads and buildings (though Desert Highway has been around since before Roane County, too). Roane County TN USA, in it, the road that goes through Rockwood and Harriman downtown goes for over 18 miles from north to south end of the map.