Fog is a drag. You have to drive slowly, you can't see well and that makes your commute surprisingly even more boring than it already is. So why not turn up the radio to pass the time? There's no possible way that the radio and fog could have any correlation. None. What. So. Ever. Well actually, cranking up the stereo might not be such a good idea.
Okay, we'll admit it. Being able to hear in the fog doesn't seem like something you'd need to be able to do, but it is. Trust us, we research this stuff. If you're driving in dense fog, turn the radio down and roll your window down as well. It might just make your commute a little safer.
Rolling your windows down allows you to hear the traffic that's all around you, even though you can't necessarily see it. That car that's 20 feet (6.1 meters) in front of you (the one that you can't see), well, you just may be able to hear it -- and believe it or not, that helps. Squeaky brakes, tires hitting a puddle, a bad CV joint or just regular old road noise; hearing all of these things can help you identify when there's a vehicle around you. And when you can't see a car, hearing its location is the next best thing.
If you don't put your window down in the fog, you're driving without visual or audible cues. And honestly, what's left?