Metro’s at-grade light rail lines are painfully visible as they hold up traffic signals, but its network of underground tunnels is still a secret to some Angelenos. It’s understandable, for the subway commits two cardinal sins as it seals away the sunlight and induces earthquake paranoia. Also, it’s not a car. But Metro will shuttle you underneath Hollywood and Downtown without any of the nightmarish traffic snarls. It’ll get you home from a drunken night in Koreatown until 2am on weekends. And it services some unexpectedly sophisticated-looking stations. It’s possible that “nobody” takes the subway in LA, but maybe it’s really just for those in the know.