It occurred to me as I was driving around today that there's a bunch of elevated train tracks in Steelport, (you can see some from the helipad of Saints HQ, for example) but I don't think I've ever ridden a train or even seen one anywhere, and I don't remember seeing any train stations. I'm not even sure I know where the tracks go, except in a big circle.
Are there trains in Saints Row 3? Can I ride in or hijack one, if so? Where do they go?