Hand wash only, air dry...

My little brother was the area manager for a rental agency that had about 500 vehicles on the road, in his territory. He not only had his employees trained to alway remove antennas before entering "rag beater" car washes, but they were well aware that they would serious consequences for any damage to a car as a result of being too lazy to unscrew the thing, and put it in the car, beforehand. I can't imagine why the car wash is at fault here? I don't need to be told to not drive a dually through one. To not leave a case of empty beer cans in the bed. To not leave a whip antenna in place, or do any other dumb thing before entering one. I'm not sure why the lack of a sign somehow makes your own stupidity somebody else's fault? Now the bigger issue is why anybody would take ANY vehicle they care about through a beater rag car wash in the first place? I check first, and if it isn't touchless, I move on.