A Washington state teenager who survived eight days in her wrecked car was possibly saved by her own dehydration. Doctors say lack of water might have prevented a blood clot in her brain from expanding. Seventeen-year-old Laura Hatch was last seen at a party October second. Then, she disappeared. Her family all but gave her up for dead. Deputies nearly wrote her off as a runaway. Hatch was found Sunday in the back seat of her crumpled car at the bottom of a suburban Seattle ravine. She was badly injured and severely dehydrated, but conscious. The circumstances of her disappearance remain unclear. Hatch is hospitalized in serious condition. A deputy says this is an "extraordinary tale of survival."