One of my favorite Steve Martin
Steve plays Harris K. Telemacher, an LA TV weatherman who meets the woman of his dreams--a British journalist played by Victoria Tennant. So it's ultimately a love story, but it has frequent vignettes of life in LA, including sentient highway advisory signs, earthquakes, automobile culture, and the entertainment biz.
It was written by Steve, and also has lots of cool Enya music.
Best line? "Let me not drive!"