Hermione's Parents in Australia

In the opening of the film, when Hermione is called down to tea, we can hear her parents talking about Australia along with an announcer, presumably on the TV, talking about a country-side. This is a reference to the book, in which Hermione says she not only wiped herself from her parent's memories but gave them new identities and made them think that they'd love nothing more than to move to Australia, which we presume that they do.