Elon Musk's stance on utilizing Bitcoin as a currency on Mars has undergone a notable evolution from initial scepticism to cautious consideration. Initially resistant due to Bitcoin's prolonged transaction settlement time, Musk, in a Space on X conversation with ARK Invest CEO Cathie Wood, remarked, "It would make sense to use some kind of cryptocurrency on Mars; you couldn’t use Bitcoin because the reconciliation is too long." This scepticism is rooted in Musk's overarching vision of establishing a human colony on Mars by 2050, underlining the necessity for humanity to become a multi-planetary species.