Lessons learned the hard way (the first in what will undoubtedly become a series!)
If one leaves a bottle of water in one's car overnight in sub-zero temperatures it will freeze. If it is a full bottle of water, it might expand enough rip open a seam in the bottle. This, in and of itself, is not a problem. However, when one turns on the heat in one's car, or parks in a sunny spot, the ice will melt and become water. This water will leak out the cracks in the bottle. (Also not a big deal!) The problem comes when one continues to ignore the bottle of water laying on the floor of one's car over a period of several thaws and freezes. The leaked water will re-freeze into the carpet layering the floor with ice, and attaching the cracked water bottle to the floor of the car. The moral of the story - - people who leave water bottles in the car should move to a warmer climate eliminating such problems!