Wow, 8-bit came in and gave some serious knowledge. Thank you very much for that.
So looks like we may see some video game magic? A train full of fuel and the "know how" to drive it? That seems like the only way.
Because other wise, the only logical explanation is that they run into someone like 8-bit in the game and has some kind of fuel supply going.
Ou7shined said something about running into someone who has the thing running and Lee catches a ride. I think that is the simplest and easiest explanation. It would explain why they are sitting in the box car in one of the scenes for ep.3 But then again it doesn't really explain anything...just allows us not to think about it.
And to the guy with a mask on his face, yeah don't worry about it. The German already talked to me privately about your feelings. So the less said the better. Take the moral victory. You deserve it. Other than that it's the past old stuff. Let's move on.