So it seems the big challenge with landing and taking off from the moon is carrying that much fuel. A robotic module on the moon that converts water, carbon and

So it seems the big challenge with landing and taking off from the moon is carrying that much fuel. A robotic module on the moon that converts water, carbon and sunlight to rocket fuel should solve that problem. Is anyone else imagining the mission is going to discretely drop such a module when it's in the moon's shadow or do I just have an overactive imagination?