Reddit mentions of NAC&ZAC Pet Car Door Protection Cover, Black

I have the hammock you linked. It works pretty well, but I only attach one side to the front seats, and fold the back seats down (hatchback) since my dog needs a little more room than the back seat. There are also door covers that might help keep the door trim from getting scratched up, though I don't have those. The dings and scratches from my dog have all come from his toenails. Keep them as short as practical, and use a dremel for trimming instead of clippers, since clippers can leave sharp edges. You might want to toss some cleaner in your trunk to wipe up any slobber or noseprints, and keep a towel/paper towels in the trunk in case of dirty feet/unexpected mud. It can be really hard to get hair from short-coated dogs out of the headliner but if you put on a heavy-duty rubber glove - the kind for washing dishes & stuff - and brush the liner with your hand that will help the hair ball up so you can vacuum it out.

I used to use some thing like this. It has a piece of plastic that slips in by the window and holds it on the door.

https://www.amazon.com/dp/B00AEB7FOY/ref=cm_sw_r_sms_apa_Sf6hybYK1AGE3

I've tried most of the ones that others have commented on and I settled with this one: 4Knines Rear Bench Seat Waterproof Non-Slip Cover with Hammock. Seriously the best thing ever. The non-slip coating on the back keeps it in place, the hammock piece that clips up to the front passenger seats keeps my boy from jumping up front or getting my front seats dirty. I have the same thing for my front passenger seat too just incase I have him up there with me. 4Knines Fitted Bucket Seat Non-Slip Cover. One thing that I like about this brand over others I tried is that the covers have flaps that go down and actually cover the side of the seat too. Especially helpful in the back seat to make sure fur and stuff doesn't get everywhere.
 
I also invested in these handy little things. NAC&ZAC Waterproof Pet Car Door Cover They keep my boy from scuffing up my doors with his giant paws.
 
Let's see, what else. Oh, I got the cargo net for holding leashes and doggie bags. Genuine Subaru F551SFJ100 Cargo Net, Rear I also keep window cleaner and dash cleaner in there to clean up dog sneeze goo and slobber.
 
Mandatory Dog Pic
Bonus Extra Dog Pic

Firstly, cute dog!

My doggo is currently not allowed in my car, but we have this cover for my girlfriend's car and it stays put very well. The underside has little rubber grippy dots that hold well to the leather seats, there are elastic loops that go around both the front and rear headrests, elastic on the corners that you can use to secure the corners to the rear seat uppers, and extra long straps that velcro which would allow for securing along the bottom of a seat if it was possible. It's not possible in her car, but we manage to tuck some of the excess fabric in between the seat and the sides of the car and it holds tight. Also, there are some padded flaps that are tucked into the rear seats between the bottom and the upper that very securely hold the cover in place. It honestly hardly moves once it's installed.

For door panels, we purchased these but haven't technically used them yet. I imagine it would work fine, and I know it will fit in the FoST (tested it). But it would require applying a little velcro to the door panel if you wanted to get a more secure fit.

As for biting the seat cover, we haven't had that problem with our pup because we spent a lot of time training her on what she is and is not allowed to chew right when we got her (I read a lot about this and was worried she was gonna destroy everything so I was extra prepared, lol). I would recommend throwing a chew toy in the seat with her so she will have something that she enjoys and can chew on while she's in the car. If she's not searching for something to chew on, then you will be able to worry less about her chewing on the seat cover.

I can't comment on how to keep the fur from getting everywhere, though, and this is the main reason why I haven't let my pup ride in my car yet. She sheds like crazy and fur flies everywhere when we open the windows while driving.

I have this Orvis dog seat cover that I saw recommended many times on Tesla Motor Club. https://www.amazon.com/dp/B013W0N0S8?ref=ppx_pop_mob_ap_share it fits the model 3 perfectly and creates a nice little box in your car for the dog almost. The headrest straps don’t interfere with your head or neck at all. One thing is if you want to have 3 people and a dog in the car it’s kind of hard to use.

I also got these to protect the doors: NAC&ZAC Pet Car Door Protection... https://www.amazon.com/dp/B00AEB7FOY?ref=ppx_pop_mob_ap_share

I really like this setup and it’s worked perfectly for my dog.

I bought these door covers for my S. They work great. I still end up with nose prints on the inside of the window but those are easy to clean.

NAC&ZAC Waterproof Pet Car Door... https://www.amazon.com/dp/B00AEB7FOY

Just don’t roll down the window when they’re in place otherwise they’ll fly out (assuming you’re like me and don’t want a piece of Velcro stuck to the door to keep it in place)