On freshly painted vehicles damage to automotive paints and other coatings can happen. It is mostly on dark colored vehicles, and the only way to spot it is under fluorescent lamps. Most damages are caused by environmental fallouts, whether it is acid rain, bird dropping, pollen, or tree sap. But, acid rain scars automotive coatings. Acid rain is both dry and wet deposition of acidic pollutants that can damage auto finishes and other surfaces of materials.