C.B.
A. i can only give you my experience, but we drove to florida over the summer with a 2 1/2 year old, and he was SO tired from all the excitement that he slept great...we actually just put him on a pallet on the floor. he had his own blankets, lovey, and stuffed animals and pillow, and was fine. but he is a really good sleeper naturally...hopefully yours will be fine too. i think when they're that small they can sleep easier than us, sometimes. PS, i don't know what a peapod is, but if it's like a pack-n-play (which my son did fine with also, when he was small enough) you can put some extra padding in them by using blankets if you're worried about it, and i'd say as long as he fits lengthwise he should be fine. good luck and have a good trip!