The unfortunate reality is that LA is a city with such insanely bad urban design that it's unlikely the corridor is going to be of huge benefit to someone making the trip, at least in the near term. Their city transportation options need wholesale revision to give intercity transportation a fighting chance; as it is now, you'll just be in gridlock congestion or hours of awful public transportation to get to the departure station, for most people.
LA, like so many postwar-design-pattern cities, have sabotaged themselves terribly. Which to me, weirdly, is all the more reason to just barge on ahead with projects like this. They cannot afford to NOT start fixing their brutally inefficient, totally car-oriented infrastructure. The existing system doesn't work. Can't work. Only de-emphasizing car trips can work.
ArtieShaw