This was an idea that I have had kicking around, which is what would a "useful" rail network be in California. California already has a "good" set of Amtrak lines, but I have thought up what could be a better map. Then I put it off cause I didn't have the time or photoshop skills to do it. Then I figured out I could do it using google maps and here it is. As for what the service would be, I only imagine upgrades of the current service. Maybe some areas electrified to have trains going 125 mph, but I didn't get into that. I'm just posting this to see what others think. Its mostly just changes to the existing Amtrak routes. [
This all looks good but i would say the reasons it hasn't happened yet all fall into…
–geographic constraints
–capacity constraints (sometimes in combination with the previous)
-nonexistent populations (e.g. northern part of the state)