Drawing inspiration from Costello's exhortation in the 2004 budget for Australians to "have one for mum, one for dad, and one for the country," Chalmers expressed support for boosting childbirth rates.
The crash killed 42-year-old mother Nancy Lefrançois and her 11-year-old son Loïc Chevalier, who were travelling in a passenger vehicle struck in the collision.