If you are low income/receiving centrelink income support you may be eligible for medical transport allowances.....my friend who has had a double organ transplant gets this as she lives outside the 'zone' for the hospital (lives about the same distance away as you would). I forget exactly how it works, I "think" she might get vouchers for the taxi or something like that. Doesnt hurt to ask at Centrelink if there is anythign they can do to help.