Been on a couple of road trips of late, last one was a day trip CHCH to Dunners and back same day, Sunday. Filled up at self serve NPD in Oamaru. It was SO SLOW to fill. Then the auto stop on the filler thingie didnt work so it overflowed. Then I accidentally put 95 in not 91 (took my wee use for golf car). So the idea of saving a little money going to NPD fell apart!