The American Highway Users Alliance ranked thirty seven large cities in the United States in terms of how prepared they are to undergo a mass evacuation. The results? Most cities are in bad shape (full report card, in pdf, is here). Kansas City, however, can be evacuated easily, mainly “because it’s not densely populated, there are no geographical barriers on any side of the city and it has a good intra-city road system, said Greg Cohen, president of the highway users alliance” (from the USA Today article about it). Wired Magazine also had an infographic in its February 2007 issue about this, but that piece is unfortunately not available online.