Musk said that the number of robots will eventually reach hundreds of billions, and humans will enjoy widespread high income.

Musk said at the Saudi-US investment forum held in Riyadh on Tuesday that he predicts the number of humanoid robots will eventually reach tens of billions, completely changing the global economy. "Everyone wants to have their own robot," Musk said, "You can imagine it as having your own C-3PO or R2-D2 - but better." Musk said that with this level of automation, productivity could soar, leading to what he calls "universal high income," when goods and services will become so abundant that "no one wants anything." Musk also acknowledges the risks, saying, "There could be scenarios like in a James Cameron movie, like Terminator. We don't want that," he said, "But having a future similar to Star Trek would be great."