Perhaps new in Melbourne but...
I passed through Sydney about twenty years ago, and spent a little time talking with some moto based medics at that time. I'm a medic, so I had some serious professional curiosity, and they were kind enough to invite me to the station to talk a bit, and to show me their kit.
What a cool job!
Theoretically, they were able to get to a patient much faster than a conventional ambulance, splitting lanes and using one way streets etc. Transport rig came separately.
1) wear cool leather costume
2) get paid to ride a motorcycle
3) get to help people
4) work solo, like a boss