I have a trash bag in my car so I don't have used Kleenex, gas receipts, food receipts and parking lot tickets blowing all over the car. I generate trash in my car, so I have a place for it.
Sort of like about 15 years ago when Mercedes discovered they could actually calculate how many sales they were losing in the U.S.because their cars had no cupholders. In German, you want coffee, you stop, go into the coffee shop, sit and drink it, then go back to your car to driver. The new head of Mercedes was horrified that he would go in the history books who put something in a Mercedes that is unthinkable in Germany, a cupholder.