I believe those are wind chill temps in Minnesota, not actual air temp., but still, right? It's supposed to be -55 wind chills here in N. Dakota this weekend. A car will start in those temps if it has a strong battery, but a block heater is a huge help. I remember starting my 1990 Justy once when the wind chill was -91. The block heater was plugged in, but it still sounded like it took a few minutes for oil to reach the top end of the motor. The manual tranny felt like it was full of frozen molasses. The one funny thing about that day was that when I started the car, a knob backlight that had never been lit, lit up, the only time it ever did. Extreme cold does extremely weird things to machines sometimes...