If the Caltrain connected to any other public transit system in a reasonable way, I don't think the Google busses would exist. Riding trains is much more pleasant than riding busses, but not if it adds an extra hour to your commute each way.
Furthermore, if you want cheaper housing, build more of it. I don't think there's an easier way around it.
Furthermore, if you want cheaper housing, build more of it. I don't think there's an easier way around it.