What is the go with the number plates that are just a picture of a crown? Shiney on a black surface. I assume they are government, or commonwealth? I have seen three different holdens this week with them, in brisi. I have only seen two others before. I figure they may be around here more for K-Rudd? Are they exempt from road laws? I heard rumor that there is three or so cars in Aus that are exempt from laws in special circumstances?