With one day left until "Carmageddon" strikes, it'll be helpful to know what exactly LA is getting itself into.Last night, KCET aired a special entitled "Countdown to Carmageddon: The 405 Closure (http://www.kcet.org/shows/countdown_to_carmageddon_the_405_closure/countdown-to-carmageddon-the-405-closure.html)," produced by UCLA. The program puts the shutdown in perspective, noting that LA has never witnessed a larger or more time-consuming closure.More... (http://www.huffingtonpost.com/2011/07/14/405-closure-kcet-ucla_n_898706.html)