Early one morning, I was having a drive out looking for fungi .... like you do, when I saw a blanket of mist hanging in the valley. I actually thought something was on fire.
I managed to park the car. It wasn't the best spot, but I was right at the top of a hill, so was in a reasonably good place. It looked eerie but heavenly as well.
Sometimes it's nice when something unexpected happens. If you go looking for mist you can't find any! At least I know where to look next time.