Mine does, but I also drive a $12,000 car (new) Toyota Echo, kinda says I'm cheap maybe? I mean its fixed up some, and somewhat customized, but I have an Oregon State Shaped dive flag (my LDS's sticker, has thier name on it) and a normal dive flag on the back window, along with my PADI sticker (which is right over the 3rd brake light and you can see the PADI symbol when I step on the brake) and then on the side rear windows I have a dive flag taped on the inside of each, not real noticable as the windows are tinted. I figure if someone wants to brake in let them, I have full-coverage. We've also never had a serious problem here, I had stuff stole out of a truck box once, but I either forgot to close it, or didnt latch it well, or at a minimum didnt lock it, it was my own fault, they left all the semi-expensive stuff and took about $20 of stuff, leaving the $50+ of stuff still in there, idiots. Sides I'm not gonna keep gear in my car except when I dive, and then its in there only in transport, then its on my back, or in the room, etc.
My car says I'm a diver, and I'm not worried about it being broke into, if it is, oh well... Nothing really good in there, $200 of subs/amps in the trunk, and a $200 stereo in the dash, I got full coverage insurance though, I'll just get new stuff