Caption:Gull said 3 percent of its sites had not been able to meet the extra demand from customersPhoto credit:Nick Monro / RNZNick Monro / RNZAA spokesperson Terry Collins said any extra demand from people panic buying would put stress on the system.Nick Monro / RNZSome stations would have a wait until the next delivery arrived.Nick Monro / RNZA petrol tanker arrived to refuel pumps at Torbay Gull station.Nick Monro / RNZ