According to my latest hidden roads of ATS researched I found at least 12 new hidden roads in Missouri. Searching is still in progress. So probably soon will be update for 203 roads guide (which is obviously will be bigger) and you can follow the progress on the list of secret roads https://trucksim.top/y9t6
On couple below videos 2 of these secret roads – one in the Ozark area and one in Cape Girardeau. #CruisingMissouri. It is not Road trip mode yet, just mod car 2021 Dodge Charger SRT Hellcat. Hope one day to reproduce it with vanilla car in game.

News and early announcements are in Telegram channel https://t.me/trcksm