It looks like you've thought of just about everything for you new pup. I'm sure you have it, but don't see it on the list - a collar appropriate for your baby's size? I don't see "poop" bags.
For you: Handy wipes in case you need to clean your hands. Aspirin or something for a headache. A rain pancho. Phone numbers for your breeder, your vet, her vet (just in case baby gets an upset tummy while you're on the road).