Two years ago I found that people had been drawing designs all over their cars with sharpie, so without my parents permission I decided that would be the perfect advertisement for my mandalas. It took about 10 hours over the course of 3 days. I love seeing the reaction people get when they see it. After I started drawing and my parents found out they weren't very happy with me but two years later I think they like it more than I do. All I used was about a pack of sharpies and no clear coat. Although I wish they would let me do the entire car I am happy with the reactions I have been getting so far. 