Ambulance cover is provided by the State government for Queensland residents (https://www.ambulance.qld.gov.au). This includes cover whilst interstate.
Other features of this ambulance cover: Non-emergency ambulance services include transport from home to the hospital and transfers between hospitals. Services not covered include air ambulance services, transport between a public hospital to your home and transport not provided in an ambulance.
For further information about this policy see: http://www.hbf.com.au/health-insurance/ambulance-cover.html