[minheim]

Traditionally LPG prices rise in Australia in summer as it is the Northern Hemisphere winter and hence the Saudi price (used by us for benching export parity) rises due to increased demand.
That said I can't see it being the same price as petrol given it is not as efficient. It it were the same people with dual fuel would use petrol and then supply would exceed demand here and prices would drop. We might see it become less advanatgeous to use gas if petrol stayed low given the greater volume required for equal kms. Whether international recession affects petrol and gas equally I don't know but I suspect it will still be cheaper in Australia to run on gas.