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However, Musk also acknowledged the enormous challenges involved in such an undertaking. He estimated that to make the city self-sustaining, at least a million tons of equipment would need to be transported to Mars. This effort could require more than $1,000 trillion, an astronomical figure when compared to the US GDP, which currently stands at around $29 trillion. This cost highlights the complexity and scale of the task, making it seem financially impossible with today’s resources.
Despite these hurdles, Musk remains optimistic. He believes that with ongoing technological advancements, SpaceX can make interplanetary travel affordable, potentially laying the groundwork for human life on Mars. His vision, though ambitious, continues to push the boundaries of space exploration.