Autopsy: Actor Paul Walker died from impact, fire in crash --- LOS ANGELES (AP) -- "Fast & Furious" star Paul Walker was killed by impact and fire in a crash that occurred while he was a passenger in a Porsche driven by his friend, according to an autopsy released Wednesday -- Walker died Saturday when the high-performance car smashed into a light pole and tree, then exploded in flames. -- The 2005 Porsche Carrera GT was driven by Roger Rodas, who was killed by the impact alone, according to the autopsy released by the Los Angeles County coroner's office. -- Results of toxicology testing will take another six to eight weeks. - More, JUSTIN PRITCHARD, Associated Press