I have the one mentioned in the other linked thread, seen here:
And while it gets the job done, it's a little too big for the back seat area and looks a little sloppy.
Also compared to the one pheen
has, it definitely slides all over the place without the textured grip backing. I may have to look into that one instead. So thanks for the link, pheen
The door covers I got have also come in handy too, if anyone has considered them. They work very well and I just leave them on all the time because I don't usually have any back seat passengers.
Krunco Waterproof Pet Car Door Cover