A 21-year-old woman was killed when her sports utility vehicle rolled several times on Interstate 8, authorities said. Kimberly Rose Bateman of Pacific Beach was driving west on I-8 about 10:30 p.m. when she lost control of her Hyundai Santa Fe just west of Dunbar Lane, according to the San Diego County Medical Examiner's Office. The vehicle veered off the freeway and into the median, where it rolled several times, authorities said. Bateman was ejected from the SUV and pronounced dead shortly after arriving at Sharp Memorial Hospital, officials said. The California Highway Patrol is investigating the car accident.