Well, that's all fine and dandy, but LA's mentality regarding such things is completely bass ackwards. Plus in LA, you need a car to even get around, so a train from SF to LA will have a disconnect in LA, because what do you do in LA without a car? Arrive in SF, and you're in the heart of downtown at the new Transbay Center. You connect to BART, CalTrain, Muni, and dozens of bus lines. Or just walk to your destination.
SF Bay Area's 9 counties population of 11M+ plus Los Angeles and San Diego's millions more, you simply cannot keep building multiple airports. What happens to ground traf