I was cleaning images off my phone and discovered this documented strangeness.
There had been a thin covering of frost on my car, and a freezing mist settled on my car as I drove. When I got home, I noticed that there was an icicle coming up from the hood of my car.
I can only figure that the moisture from the mist was funneled there by the contours of the car, such that what was essentially a water spray froze in place.
Seriously friggid!!!