Folks, we remind you time and time again, please don't rely 100% on your GPS's in this part of the country. I know that's hard for some of yout to believe, but the fact is, this part of the country was one of the last to be mapped in the age of pen and paper, and the same holds true in the digital age. In a place where major cities are as few and far between as they are in the Southwest, buying a good old fashioned road atlas or paper map or just stopping at a gas station and asking for directions can be the best investment of your time/money on your whole trip.
And if you don't believe me, read this article ->:
GPS & SatNav's are only as good as the information that's programmed into them!!!