Our Toto has more miles on her than a '60 Chevy [by car & air]!! She is an "only child", is pad trained and small. When travelling by car, we put a large soft-sided crate on the back seat with the opening facing front so she can go from the console to the crate [make sure it's level and flat and doesn't "rock"]. We put her wee wee pad & water in there. On the console, we put a comfy bed and I always carry plenty of blankets for her to snuggle in and plenty of toys/chews. She is happy and loves to travel with us. Of course we stop as often as we need to, but don't have to make unnecessary stops to "walk" her ... we do let her exercise every time we stop, taking turns to exercise her while we take our "potty" breaks! Works for us!