I had essentially the same experience–I did SJC to SBA a few times a year when I was in college (which for the non-Californians here, is a destination that does not really have an airport you would want to use). I took Greyhound the first few times and then switched to Amtrak, even though it took 2-3 hours longer. I'll take that every time just by being able to get up and walk around. And the views coming in around Point Conception as the sun sets are priceless :)