OP mentioned it is a new car. The "film" on the inside of the windshield is probably not dirt or dust, but off-gassing of the VOCs being released from the car's interior. It might take weeks, but it would help to leave the car parked in the garage with the windows down. That should help lessen that film's reappearance over time.
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Chino 1960's to 1976, Torrance, CA 1976-1983, 87-91, 94-98 / Frederick Co., MD 1983-1987/ Valencia, CA 1991-1994/ Brea, CA 1998-2002/ Dana Point, CA 2002-2019/ Knoxville, TN 2019-Current/ FL 2022-Current
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