Yes, I have hand washed cars for 30 years. I made sure it was early and in the shade. The same water did not do this before. Very odd, but no permanent damage done. Going to also try a waterless wash.
Anyone have an issue like this or know what may have caused it? I hand washed my CT for the third time since owning and it created some weird spotting. It is also on the black plastic around wheels. I did nothing different and used only car soap, water and hand towel dry. The spots do rub off.