Well I can't post pics with them right now but I can tell you how we made it.
I took two totes and glued and screwed them bottom to bottom. I wanted to boost the car seat up so they could see out. After the glue dried, I made the seat cover and a pillow to go inside.
The seat belt (lap part of the seat belt) goes around the front of the seat, the shoulder part stays in back. I have a dog collar that gets strapped around the shoulder part and I have a dog leash splitter that gets looped through. Then the dogs get hooked into the spliter.
I'm not sure how I like it yet, they still try to come out on my lap, and on the arm rest. I just keep telling them no. But I had to try before spending all the money on a new one. I might need to have two.
I will post pics. soon as I can.