SYOSSET - Police say a Syosset driver is accused of running down a woman last night and taking off from the scene of the accident. Investigators say the 24-year-old victim was crossing Woodbury Road at Jericho Turnpike in Woodbury when she was hit by two cars. Police say the first driver who hit the woman, 21-year-old Paul Reiners, of Syosset, sped off from the scene, but returned an hour later and was arrested. The victim is being treated for serious head trauma.