Is it an initiation or game?

I recently discovered that someone switched Saab car emblems on me. I had brand new, or nearly new hood and trunk emblems when I bought my used Saab in March. Two days ago, I looked at the hood of my car and saw a completely silver, no griffon, no Saab, no blue surround emblem on the hood. I KNOW that it isn't mine. I walked around to the back and looked at the trunk emblem. That one isn't the same either. It has parts of the blue and red missing on it. Who would switch emblems? Is it some sort of game Saab people play on each other? Is it an initation into the Saab world?? If it is, I DON'T want to play. I'm not having fun having my good emblems swiped and replaced with crap. I looked up replacement parts online and found brand new ones cost $57 for the hood and $49 for the trunk!! Ohhhh, this is NOT funny! I went on eBay and found some to bid on---I'm waiting now for a used, but looking pretty new hood emblem. So far, I am winning it for under $5 with shipping of $3.50 so it would be a reasonable price. But I still feel like I want to Superglue it or weld it or something to the hood of my car so no one can swipe this one. I have a strong feeling it happened at work. Security just zips through the parking lot on occasion and there are no security cameras out there. RATS! There are lots of different people using that lot when there are conferences in our building, which is practically every day so there are transient Saab owners lurking. It really sucks to think someone who works for the hospital would do that to a fellow employee. Wouldn't it be funny to rig a siren to the emblem so that the next time someone tried to swipe it a really loud shrieking alarm goes off ? and then maybe some red dye spurts out and covers their hand so that they are marked as thieves? Hey, I can fantasize about revenge.