This morning my car displayed a temp of -17 degrees, and a radio announcer said that windchills were 20 to 30 degrees below zero. Bbbbbrrrrrr!!! I have had one colder experience, though: in late December of 1989 I woke to a 20 below/40 below windchill day here in Minnesota, one that froze the car's gas filter. I had to climb under with a hair dryer to thaw it. Now THAT was a cold day!