With kids or otherwise lot of trash stuff has to be disposed off even within car. Trash Stash Car Litter Bag makes this an easy routine. You can even pour drinks into it without any spills and damage to car seats or floor.
It has sturdy frame structure which can be attached to back side of heat rest, away from view but easy to reach to put trash items. If you are planning for a week long car trip, then this trash bag can be real handy in keeping things organized and trash away. Feels so clean with this around. $12.72