Frostbite builds character

So, apperently when it gets cold out, one is encouraged in wearing coats. This is a problem for me, but I cannot remedy this issue. Here is my dilema. I shall re-create an everyday scenerio for you. Here goes....I look outside and I notice my truck is covered in what appears to be powdered sugar. After realizing that my truck has not been vandilized, and that it's just frost, I conclude that it is cold outside. (Here's where my problem comes into play) Why should I wear a coat for the 10, ok maybe 15 seconds that I am walking to my car? As soon I hop in the car and start it, I can turn the heat on. Now I'm sweating...I then escape from my "Straight jacket" and hurl it to the backseat with all the other coats in "Coat's hell." Can you comprehend my issue with coats? You learn to live without them after playing baseball all your life...So, basically in order to avoid this fiasco, I avoid wearing coats. And just for clarification, my lack of coat wearing has nothing to do with getting sick a lot.....