Restoration and custom cars is a hobby with me, including but not limited to 4 years of formal night school training in auto body work. There is a tool used in body shops comprised by a white colored rubber wheel about 3 inches in diameter by one half inch thick. It is called a pen stripe or logo eraser. It is mounted on an air driven disk sander and used much like a big eraser. After removal, the surface is wiped down with lacquer thinner and finished with 600 or 1500 wet and dry, then compounded and polished. When paint is needed, the area is sanded, primed and painted and sometimes with clear coat only if the job is a repair. With base clear paint, the clear coat if applied after the stripes, air brushing, flames, logo, etc. It is difficult to sand a factory surface fair without erasing the pen stripe or logo first because logos and stripes are frequently applied over the finished surface. Trucks and campers may be painted with single stage and no clear coat. These days almost all cars/custom paint is base clear and will finish with the clear surface completely fair over "trick art." Refinishing these surfaces is another problem altogether.