Long, Hot Dusty Road

"Let a man walk ten miles steadily on a hot summer's day along a dusty English road, and he will soon discover why beer was invented." - Gilbert K. Chesterton

Applies to driving on a long dusty road in AZ too. :) And root beer can be substituted. Or ice cream.

One thing I have learned is the necessity of putting up all the windows rapidly before you slow down and before meeting a passing vehicle.
I've also learned that the tailgate will be covered with dirt.
Both have been learned the hard way.
More than once. :)