I saw that yesterday (when reading about the Japanese reclining in the lap of 80.00).
It's so neat, but the bummer is, you can't pawn off your kids to your sister to get a break. She'll need a break too! I hope there's enough people in the family to give them support. Can you imagine the phone conversation?
Sister: I was up all night with two screaming babies.
Other Sister: Yeah, me two.