Driving a long distance in hot weather without AC?!

Make blocks of ice, in plastic tubs with lids that will fit in the air boxes under dash, the air blowing in will blow over the tubs. The Ice melts in the tubs and not all over the floor. After they melt you have clean drinking water, or refreeze for the trip home somehow.

I commute daily w/o A/C and we are having a nice July in the PNW! Then again when the sun is out I am on the Bike.