I've been in the funeral trade since 1986, and back in the 80s, my job EVERY afternoon-evening was to wash all of the funeral coaches, lead cars and limousines, vacuum them out and clean the windows (and smoking was still allowed in the cars at that time so there was some nasty film on the inside of the glass). It irritated me to no end to see the cars get dirty every day. On Saturdays, I had the pleasure and joy of waxing several of them, in rotation, in addition to washing all of them.