Remember "Carmaggedon?" That's when the 405 Freeway was shut down completely for entire weekends for replacement of the Mulholland Drive bridge. There were predictions that the entire Westside would be unavailable to the rest of the city. There now exists between people in Los Angeles a kind of rivalry — like the one between LA and San Francisco, or between New York and LA. To get a sense of how and why, we reached out on line, using the Public Insight Network and Facebook to contact our audience. We asked a series of questions. Which side do you prefer? Where's the boundary? Which is the "real LA?" We received hundreds of answers.