There is something strangely calming about rolling the window down while driving....it really doesn't matter that it is only 18 degrees outside.... My 4runner has a heater that can cook uranium.
But, I find it nice to have the heater on, but the window down, the smell of fireplace smoke heavy on the air, and because Missoula County is crap when it comes to plowing the streets, the pleasant crunch of my Toyota's radial tires on the snow. I may be an odd duck for enjoying this, but it is quite nice.