A wind-whipped wildfire swept over a California freeway Friday, torching nearly two dozen vehicles and sending motorists running for safety. No major injuries were reported. The fire was sparked below the elevated lanes of Interstate 15. Pushed by 40 mph winds, it raced up a hill and onto the traffic-clogged freeway, trapping hundreds of people amid a cauldron of smoke, flames and ash. Drivers and their passengers abandoned their cars as flames hopscotched down the freeway, destroying 20 vehicles, several of which exploded in fireballs.