[Why would you not stop on the way home? I would never DH to go get one, but on the way back home, or my last day out. Than if need be just put a brush and bucket on her and do the small spots like the bugs on the bumper and windshield.
I love a clean truck, but if it is really a work truck it is just not gona stay clean for long out there on the road: Example, load from MN to lets say Atlanta , your usually gona cross Rain on the way.
My longest record for a clean truck has been 7 days in the East. Where it still looked like it was just washed. As long as my sides are not black from Brake Dust, and a shine, she is looking good. And yes I will wipe it down out on the road.
I use to spend an entire day washing the truck. I am telling you it gets old, when at home value your time and GET AWAY FROM THE TRUCK. You and your family will appriciate the closest truck wash a hole lot more.
Rare does two weeks ever go by and I do not get it washed. Usually once a week, thus if I do wash it at the House, it is very easy vs not doing it while out on the road. $40.00 well spent if you value your time at all.
And by the way the closest Truck Wash to Charlotte, is Haw River, or Wytheville well over 100 miles from Charlotte.