Auto Writer Washable Paint Marker GreenAutowriter is an innovative new marker developed for the auto body repair. Now body shop operators can mark clear instructions, quickly and easily anywher on a vehicle as it passes through their shop. At the end of the repair process simply wipe the vehicle clean. theres no permanent marking or damage. Auto writers unique water soluble formula is tough enough to write on a surface, but is gentle enough to be removed with water and a cloth.