Why have so many people joined the search for the California dream?

翻译吗？

为什么有这么多人加入了寻找“加州之梦”的行列？

可这是一首歌啊，莫非还有别的意思？可能是寻找这首歌的行列，可能是实现这个梦想的行列。我感觉应该是后者

至于回答，就简单了：

Because everybody has a dream to earn his own living right. Just like you and me, we all want to be rich, to earn a lot of money. Joining the search may make our dream come true!