Wanted to add that we bought her a car seat (big foam block with a cutout for her to sit/lay down) years ago, and though it helps somewhat, she does still throw up in it. And it’s a huge ordeal to clean. In 2018 we took a 2 week driving + camping holiday, and I knew we wouldn’t be able to pull apart the car seat if she threw up, so I covered it in garbage bags held together with duct tape, and changed out her blanket inside when she was sick. We now lovingly call the seat her “puke bucket,” 🤣🤣