One Nation's new Victorian leader has promoted a conspiracy theory that the "15-minute city" urban planning model is part of a sinister effort to control how Australians live and move.

Warren Pickering, the man anointed by Pauline Hanson to lead One Nation in Victoria, is a former brickie and combat engineer – and a self-described conspiracy theorist.

One Nation's new Victorian leader has promoted a conspiracy theory that the "15-minute city" urban planning model is part of a sinister effort to control how Australians live and…