To date, only 24 people have traveled to the Moon and all of them were NASA astronauts that were a part of the Apollo Program that saw some nine 3 man crews venture to our nearest celestial neighbor (three of them journeyed to the Moon more than once).
When asked if he himself is the passenger, he hinted that the mystery person is Japanese by tweeting the country's flag.
SpaceX announced late Thursday evening that it had penned its first ever private passenger to fly around the moon in its new Big Falcon Rocket (BFR). Speculation swirled following the tweet, leading some to believe it might be SoftBank CEO Masayoshi Son.
The announcement is a giant leap toward commercial space travel, with SpaceX, Richard Branson's Virgin Galactic, and Amazon's Jeff Bezos all pursuing the goal of commercial space flight.
The Falcon Heavy debuted one year after that announcement was made.
Shortly after his successful Falcon Heavy Launch, Musk said he expected a "full-scale test" of the massive rocket within the next few years. However the passengers were never named and the flight has yet to materialize.
He introduced the BFR, composed of a rocket and spaceship, in 2017, saying it was aimed at allowing people to colonise Mars and that the company wanted to land two cargo ships on the Red Planet in 2022.
In an interview in March, Musk said the ship was now being built, adding "I think we'll probably be able to do short flights, short sort of up-and-down flights, probably sometime in the first half of next year". The window for launching to Mars occurs every two years.