Chris rolled down the window and cocked his head to the side. This is never a good sign. Window down and cocked head means that I must keep absolutely silent until Chris has decided whether or not the sound he thinks he heard is a problem. Natalie had been vibrating more than usual for a day or so. Chris knew something was not quite right, but were yet to work out what it was.
So in case it isn't obvious, Australia is really far away. This is going to be a pretty big trip. I still haven't entirely realised myself how big this will be. Whilst nothing can really prepare anyone for spending 18 months driving across the world on a very limited budget, we did try to do a few more practice runs before we left.