Can you, by chance, locate said memo?
I have been going to Mike's car washes since the early 1980s and I don't notice any significant paint issues. Is hand washing better? Oh probably. I am very satisfied with the car washes I get, plus it's quick. I think it really depends upon the washes you buy. I was on vacation at Yellowstone and went thru a car wash at a gas station and it for sure did damage.Funny I have been going to Mike's Car Wash since I bought my car and have no problems and that has been 4 years now.