There’s been a lot of talk about our nation's crumbling infrastructure lately — our bridges, roads and the lack of adequate public transport. If you're planning a trip anywhere near Los Angeles, you may be cursing the road crews trying to make it better. The 405 freeway, synonymous with gridlock, is a major north-south interstate highway in Southern California is being widened.  The result, “carmageddon” as it’s been nicknamed-- a fear that it will be the end of the commuter's world.  David Rizzo, aka “Dr. Roadmap, is a self-described guru of finding freeway shortcuts offers guidance on how to get through the mess.      (Nightly News)