We're expecting our first (a boy) in September. We live 15 mins walk from the hospital, and don't own a car. We had planned to walk home with a buggy, but have been told that they won't let us leave the hospital without a car seat, even if we are walking.
Of course, it's possible that we will need to get a taxi home or something, depending on how everything goes, but still, it seems like a strange rule.
What do other car-less parents do? Should we just buy a car seat for the sake of showing the hospital, and then carry it home while pushing a buggy with the baby in it?