LOL, I've washed in the rain too! I've also attempted to Z-6 my car in 8-degree cold, sometime around 1 in the morning. It was going okay at first, but then the Zaino started to freeze on the car before I could wipe it off. I gave up and went to sleep.
A friend of mine once washed his car in the rain as well. The rain got harder after he lathered the car, so he just went inside and figured the rain would wash away the suds. Well, the rain subsided and temps dipped below freezing overnight. He woke up to find his car covered in frozen soap bubbles. :lmao: