Skyrocketing fuel prices are likely to continue with the national average of 91 octane remaining at an all-time high, Newshub reports. Prices are being pushed up by international factors, the Automobile Association (AA) believes. “The Northern Hemisphere is coming into winter – there’s a gas shortage there currently and there’s an energy shortage globally,” said AA spokesperson Terry Collins. “China’s also got a coal shortage. I think there’s a little bit more upward pressure to come – particularly before Christmas.”