They've done that at least twice: Post-war(?) bus-looking futuristic train (Someone help me here with what that was called), and the Desert Wind; both with little success. Current talks revolve around privately funded with government help -uh, say what?!- high speed train. Millions and millions and millions of dollars...Maybe when BNSF finishes triple-tracking Cajon they might be more receptive to increased passenger service. But then you'll be dealing with UP east of Yermo.