Police seized the car she had been driving that day, and the teen told them it had some scratches that have been there awhile because she struck a fence. They found scrapes that seemed fresher, the affidavit said, and a close examination of the car showed damage to the right front corner of the vehicle, including to the fog light and bumper. They also found hair-like fibers in the undercarriage and rear axle, plus blood in the rear, passenger-side tire tread.