Adelaide entrepreneur, speedway champion, playboy (according to this smh article) and son of the city’s pre-eminent power family, Kym Bonython fulfilled a promise he made in 1990 to give the National Portrait Gallery a portrait of himself done by Australian painter John Brack. The portrait has an estimated value in excess of $500,000.
Further info can be found in this ABC online article, which includes a good photo of the portrait, as well as this Age piece and this one in the smh.