I have an index card in my tickler file to clear any trash from my car every three days. (Read: the day after I do it, I reuse it three folders later.) Sometime, I’ll have more than a handful to carry to the dumpster. What I should be doing is using the excess plastic bags I get from the grocery store, tie them into small knots, and place a bunch in my glove compartment. That way, I can put whatever trash I want within the confines of a plastic bag (under the passenger’s seat), then simply toss the bag when it’s full. This is all only when I’m lazy not to throw something out right away. I’m usually half decent in keeping my car interior trash-free.