Taxing gas to build public transport makes sense, but a high speed rail network is only a partial solution in my view. What do you do when you arrive at your station? The way soCal is laid out, you’ll need an extensive local public transportation system as well to service the high speed network, and work places will need to be more clustered. With the cost of land so high, I see development becoming more vertical. Downtown LA is going through a metamorphosis, with many loft style dwellings offering an alternative to suburban living. Town planning needs to embrace the Roman idea of a hub.