Join the NRMA and get a $50 fuel card (must be new member)
You get one fuel card per subscription and up to 5 per membership. So I guess you can grab up to $250 worth of free fuel from Caltex.
From the terms and conditions on the site:
"This offer is applicable to new (not renewing or joining, adding or upgrading their subscription at the time of breakdown) Premium Care and Classic Care Membership subscription packages only. An annual Premium Care subscription is $162.50 and annual Classic Care subscription is $90.70."