In Homage to Baby in my post before last, I often wonder what the boys keep in the boot of The Impala. So as a little sort of test for fun, what items do you think the boys would carry. If we list weapons for example what and how many different types of weapons can we list, that they might store in the car? In the old days before the bunker I can imagine Dean would also carry tools for the Impala in the event of any break downs. When you think about the days before the bunker the boys would also carry clothes and any personal possessions they might own.
When you actually see the empty boot, its pure genius what they actually cram in there. I can see at least two extra compartments which I presume John Winchester must have designed at an earlier date.