Police say a woman found dead after a crash on a busy freeway in Las Vegas may been killed in a road rage shooting. The overnight incident closed Interstate 15 near the Las Vegas Strip until about 10 a.m. Wednesday, snarling the morning commute. Lt. Ray Spencer says the killing happened shortly after midnight while the woman was driving home from work at a downtown Las Vegas casino. Her name wasn’t immediately made public. Spencer asked for witnesses who saw her blue Nissan Versa before it veered across the freeway and crashed into a Dodge Charger about 12:20 a.m.