Yeah thats about 30 cents less than what I paid per gallon. I'll be in Adelaide myself in a week & a half (Nov 3rd) & going straight to Ayers Rock the next day. You should check it out also. Anyway, its probably cheaper to fly to Sydney than drive or take a train. Plus, on all domestic flights, they let you bring liquids onboard (even Mountain Dew!). Virgin Blue is THE airline to take for domestic IMHO. However if going through Aussie TSA is reason enough to go by land, then take the train. I took the train from Adelaide to Sydney & loved the experience. Plus, no checkpoints for train travel (at least when I was there).