Dreamstar Lines is a privately owned passenger railroad company based in Newport Beach, California. Dreamstar is planning a nightly inter-city service between Los Angeles and San Francisco, tentatively named the Golden Coast Express. The train would share the same routes as Amtrak, Metrolink, and Caltrain, utilizing the historic "Coast Line" owned by Union Pacific. The company aims to provide a premium "hotel on wheels" experience to compete with short-haul flights. Service is anticipated to launch in 2028, succeeding the Lark that ended in 1968. The project is currently in the active development phase, having secured key rolling stock design partnerships with BMW Designworks and locomotive propulsion agreements with ZELTECH as of late 2025.