"Grit in car wash brushes does not chip windscreens, it scratches them. But worse still, it scratches the paintwork much worse."
It is not scratches, they are minute chips, perhaps a few microns deep, but long 3-4mm long. It is noticeable, as the abbrasions are white colour. The marks could only have come from a car wash, as they are all the same direction, consistent with abbrasion from a machine. So they are not random chips.
I don't drive the car very much, so it is n't from anywhere else. The marks are fresh and new, as they are white colour. Otherwise the chips would be filled in over time with dirt etc...
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