Let me tell you about the "success" of the Lady J on my trip back from Alaska. I was PSCing (moving in military lingo)and it was about -30F on the Alaska Highway. The vehicle (1986 Ford Aerostar) contained all the necessary things to survive, including the abovementioned for my wife and nearly four-year old daughter. Short story...I spent over 20 minutes wandering around in the wind and cold while my wife tried to convince our DW to "just relax"; didn't happen. The poor thing darn near exploded!! This happened numerous times over the next four days. So, I (we) had a 50% success rate with product. It is still worth the money.