I have what I believe is road line paint on my car. I bought the car used and it appears to have been there for a while. I have researched a little and for now I am gonna try the WD40 method. Basically supposed to spray and let it soak. I sprayed it about 14 hours ago. I went to Harbor Freight and bought some decal removal scrapers. They claim the scrapers wont damage paint. I will post pics and updates as this moves along.