Hi all! We have a 15 week Pembroke. I was wondering if any of you use a booster seat in your car? Right now, we keep him in his crate when we drive him, but I'd love to let him see out the window. The boosters I've seen mostly say they're for dogs up to 20 pounds - that's fine for him now, but wouldn't work for more than a couple more months, right? How do you transport your corgis safely? I don't want him to be unrestrained. Thanks!