When paint is rubbed up against a surface it leaves a scratch, if too much pressure is applied the paint can break away from the surface leaving the car exposed to the elements which can cause rust and cause further damage to the paint. depending upon the size the area may be able to be touched up using a small amount of the matching paint to fill the scratch. Touch up paint is generally not noticeable unless you know what to look for. Touch up can save you hundreds if not thousands of dollars and can be done same day. Mobile available, Minimum charge $200.