We've been wondering the same thing. We've had the same question, but about keeping music going. My kiddos tend to keep one of the doors open, but that's not really an option if I'm in the store or go inside my house.
The one solution that I've come up with is giving them the key card. The problem with doing so is that the doors don't automatically lock as I walk away in that situation. I'd love a setting that would keep "all the things" running (while still locking the door when I reach the perimeter) if there are any butts still in any of the seats. That would be perfect!