oldngray
nowhere special
Once upon a time UPS policy was to wash all package cars every night whether they needed it or not. That changed to only wash when they are dirty. Then if the weather was sloppy don't wash because they will quickly get dirty again. Finally to the current wash "whenever". It was all about money. When UPS stopped washing as part of a big cost cutting measure the other cuts were very small savings with about 90% of the savings (read that "increased profit") coming from not washing cars.