I have Outward Hound car seats for Breese and Punken. They are attached in the back seat of my car, one by each window, so they can see out. I bought them at Petco a few years ago.
They have adjustable straps that secures them and gives them enough room to lay down or sit. They are secured by their harnesses. These turned out to be the best investment for their safety. I put their little travel blanket in each seat.
I was on my way to Arizona to visit my son and little Breese decided she wanted to escape. I had adjusted her strap and gave her a little too much lead. Need I say, I pulled over to adjust the strap on shoulder of the freeway and it only took about 20 seconds. Jumped back into the car and by the time I hook my seatbelt, a CHP was at my window.
He asked me if I need help and I told him Breese had escaped in the back and was just hooking her up. When he looked the girls in their car seats he just started laughing. He said, " I've seen it all now". He told me, you take better care of them than some people take care of their children.
Punken doesn't like the car but when she's in her car seat and at window level she fine.
Just thought I would share this with all of you.
Kathleen... Mom to: Punken Pie

and Breese BeBe