I really love this magnet -- although this was a gift for my "like-a-mom" friend. My only complaint would be that the magnet part isn't as strong as I would like/trust for my car!! So my other magnets similar to this (just different designs) i actually have displayed on my fridge -- I can see them a lot more often and better anyway!!
But anyway the one I did put on my car, I was nervous about the strength of it's magnetism, and then later it was gone. Whether it came off while I was going down the highway, OR, someone just stole it because it was so danged cute, I dunno..... but, the latter is also a risk of putting these on your actual car. =D