OK!
This game was great, for real, I can see where this could go.
The Idea is great only thing that's really missing is some more Feedback and a quick Tutorial on what to do. But I figured it out after some time. The game should also inform you that you pretty much lost if you run out of fuel.
But all in all great Idea.
The pass time made it fairly easy to grind the right materials, mb the player should be limited on those usages.