I have a neighbor who sells steel to the mines in that area. When he has to travel there he never goes alone and carries a pistol! You may very well have a nice trip with great scenery or???? We sometimes forget that travelling down 15 is not like the back woods. There are lots of areas in Sonora where even the police stay away. Not a popular route for RV'rs. Highway 2 is very scenic and mountainous. Cananea has an interesting downtown with the famous jail. You can see some of the large mines from the highway. There are many roads in Sonora that are paved but far worse than a gravel road. When it rains the result is thousands of potholes that rarely get fixed. Where will you turn in your FMM?
Moisheh