Yes the bags the shop uses
To keep from overspraying the car. Buffing causes heat but we have found that a heat gun will remove it. I believe the shop is responsible.
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It looks like trapped vapor or something. Was it recently painted? If so the plastic they covered the car with can make what appears to be etching in the clear. When it happens at my shop we use a heat gun on the areas and it usually clears up.
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