Long car ride with a dog: what to do?

nice, his behavior depends a lot on the car, and how I have it situated. If I put both rear seats down and throw his bed down, he’ll just go to sleep. He doesn’t like sitting in the seats, and doesnt really like the trunk, unless someone is in the back seats.

Hes thrown up in the car once. That was with him sitting in the back seat, and driving around town with lots of stop and go and turning.

Hes a really well behaved dog, but he is also still a puppy. I’m gonna call the vet, maybe I’ll just bring some backup benadryl or something.