Don't know if she still makes it because we ordered two years ago. A product called the Backmat. Try searching the forum for the term.
We had her add a "tail" that can be folded out to cover the bumper for ingress/egress. It covers the rear of the back seats as well.
Her email is
[email protected]
But there are many options, just find the dog threads.
And for those concerned about climate, there was a gent that came up with a floor-mounted fan system for the vents in the passenger seats that looked ingenious. Again should be in the dog threads somewhere.
We've been dog-less for a couple of years but a Newfoundland puppy is on the way
And he'll be riding in the car.