> that report doesn't address my point

It gives number for how much airport (gates and runways) and highway expansion would be needed to meet future demands without the HSR. And it does so apportioning traffic across the 3 major Bay Area airports and 5 LA airports.

The OAK situation only drives home the point. It's not as convenient, at least relative to the segment of people flying. Location matters. If you want to optimally utilize existing airports, we need more infrastructure, including better mass transit systems. OAK is connected to BaRT, but it's yet another transfer with about an extra 15 minutes of travel time, not including walking through the stations. And BaRT itself isn't an effective mass transit system; it's more commuter train than subway.

I'm traveling to LA next month from SF and still haven't decided whether to fly or drive. With CAHSR point-to-point the decision would be easier--take the train and rent a car.