So earlier today, I was driving my rental car. The front window started to fog like crazy, and I saw this series of interlocking rings on it. I thought it might have been the result of stickers because it was new, but I had seen the car fog before and it never did that. I had to pull over to do something (unrelated to the fogging) and when I looked at the windshield again, it was completely clear.
I wasn’t able to get a picture of it (which I’ll try to do next time if it happens), but I managed to replicate it on paint:
The forums didn’t have any info, and the closest symbols I could find were the Celtic knots and sun disks.
Does anyone know what these are? And what they mean? And who/what could have put them there?