The following books are a great fit with Are we there yet? by  Alison Lester which is a great Stage 1 or 2 book that fits with any unit of work about Australia.

Picture books:
Wheels on the bus by Mandy Foot
Possum magic by Mem Fox
All the way to WA by Roland Harvey
At the beach, Roland Harvey
In the bush, Roland Harvey
In the City, Roland Harvey
To the Top End: Our trip across Australia by Roland Harvey
The Search for Sunken Treasure: Australia by Elizabeth Singer Hunt
Our Australia series, by Phil Kettle Australian Geographic.                                                                                                                           Ernie Dances to the Didgeridoo by Alison LesterMy Country by Ezekiel Kwaymullina
Riley and the Grumpy Wombat : a Journey around Melbourne by Tania  McCartney
My Aussie Ocean Adventure by Jo Rothwell
Highway by Nadia Wheatley

Secondary
Swerve by Philip Gwynne
Guitar highway Rose by Brigid  Lowry
Road by Catherine Jinks
Dreamrider by Barry Jonsberg

Thanks to Pat Pledger from OZTLnet for the HIT