Have you ever been to Los Angeles (the actual city in question)? It is a city of suburbs. Excepting the metaphorical postage stamp of downtown and some highrise development along a few corridors, Los Angeles is basically 4 million people packed into a little less than 500 square miles of nothing but single-family home "suburban" development. Nobody living in Los Angeles believes that they live in a suburb, they believe that they live in a low-density city.