Kit, my car had white stuff on it too....but it was ashes, not snow, from all the fires we had out here. I live about 6 miles from the "freeway fires" as the news called them. I was sitting out by the pool under my patio, and it literally looked like snow was falling from all the ash. I was out driving and was kinda freaking out that a hot ash might land on my top and burn a hole. I was kinda close to the fire's while I was driving, like maybe three miles away. Just wasn't sure if a hot ember could travel that far, but still freaked me out. My wife's brother had to evacuate, but had no damage. Sorry for the devation from your thread.