Awful story with a great silver lining: A toddler inside her family car survived a nighttime plunge into a lake thanks to her plastic diaper, reports the Sun-Sentinel of Florida. "All of a sudden this little thing popped up like a cork," says a deputy at the scene who had been searching for her. Her mother also got rescued, but her father died in the submerged car. Witnesses say he had been hitting his wife while she was driving, which caused her to lose control of the vehicle. He had been arrested previously on domestic violence charges. The girl is in critical but stable condition. (More diaper stories.)