Shopping And The Time Space Continuum

In light of my current car troubles, I have constructed a new theory on shopping. For shoes, for clothes, the stuff people usually buy. Here goes:

If you don't feel comfortable leaving your car running outside for the length of time you will be shopping, you're in the store too long. Whether it be wasting money on gas, or the lines are too long, or whatever. If you take longer, you may want to reconsider you shopping excursion. However, the only exceptions are as follows. Whole new wardrobe because your previous was thrown away by Stacy and some gay guy. Or, you're shopping for a new car. That's it, that all.