Strange Fog

Admittedly, this is a strange picture, you are probably wondering why I took this, much less posted it. First of all, it's either this or another in my long line of sky photos but second is that it's just odd so why not share. I'm driving to work this morning, it's a pretty typical morning and suddenly this fog is up on the road on the one side. I thought it was smoke, also strange, but as we drove into it, and everyone slowed down, you could see it was coming off a bit of water to the side. I had seen a few wisps of fog off the previous water sources but hardly any so this big patch was eerie...is it Halloween season?