State of mines down to one of them plastic drying blade things, roof is a mess!
Yep, another awful method of cleaning the car, leaves the dirt/grit nowhere to go and just scratches the paint, this is why if you care about your paintwork then it's good to try and take as many steps as you can to try and avoid even touching the paint, the more you touch it the more chance there is of getting all those horrible small scratches and grazes we all hate so much.
You only get so much clearcoat/lacquer so you want to try your best to avoid getting the swirls in the first place instead of trying to fix it afterwards.