I live in Adair County, but work in Albany (Clinton County). One day at work, I commented about the big trucks coming through downtown (which I could not understand them coming through as it is difficult to believe that many 18 wheelers, cement trucks, log trucks, etc. had any business coming through downtown) and one of the ladies that I work with replied that if these truck drivers were using GPS that a lot of the time it would take them on routes that make no sense for a big truck to be taking, and that the company that her husband worked for would not allow them to use GPS for that exact reason-- it did not know to tell the truck driver what route was best to take based on the size of his vehicle.

Sometimes the shortest route is not the fastest, nor the easiest to take, and someone who does not know the area depending on an electronic device may be routed onto a road that does not make sense for them to take. Maybe that is one advantage we have with good old fashioned road maps and atlases, you could at least get an idea of the available routes and which ones seemed to make the most sense.