When it comes to US politics, at this point anything's possible – so why not President The Rock?

Hollywood star Dwayne Johnson has hinted in a new interview with GQ that he'll one day give up his movie career to run for US president.

"I think that it's a real possibility," he told the magazine.

Johnson, who was last year named the world's highest-paid movie star, said he began seriously considering a move into politics after reading a Washington Post article, published last June, that posited him as a viable contender against Donald Trump.