Los Angeles, Chicago and New York are among the least prepared cities in the United States to evacuate quickly in case of a catastrophe, a report by a transportation advocacy group showed on Thursday. The American Highway Users Alliance study of the 37 largest urban areas showed that 25 of the biggest cities were less prepared for a major evacuation than New Orleans, which struggled during Hurricane Katrina in 2005 to empty the city before and as it flooded. Full Story