"Responding to a Twitter thread started by AI researcher Lex Fridman, Mr Musk agreed a “Mars economy will run on crypto”, suggesting it could be with the novelty cryptocurrency dogecoin or the fringe cryptocurrency Marscoin."  ... "Dogecoin could be a more likely candidate, given it continues to be relatively popular and shares many of the same decentralised attributes as bitcoin.

- https://www.independent.co.uk/life-style/gadgets-and-tech/elon-musk-mars-cryptocurrency-marscoin-b1779456.html

A lot of people did notice those articles, they're all over the www.