Elon Musk says space factories on the Moon, Mars are needed to become quadrillionaire. He believes the future economy will not use dollars.

The SpaceX CEO envisions a world where robots serve humans, and the output of goods and services will far exceed the supply of money, creating deflation.

Elon Musk has reportedly become the world's first trillionaire following SpaceX's record-breaking IPO. While acknowledging the possibility of becoming a quadrillionaire, Musk…

Elon Musk says space factories on the Moon, Mars are needed to become quadrillionaire. He believes the future economy will not use dollars.