Found One!
Well I was trying to find a locationless cache for my 900th so I was looking for a disused railway station in Two Wells - turns out they don't have a railway station so I headed off to Mallala. Then just out of Two Wells I see a freight train heading towards Mallala...
He was going along at about 90km/h and I was going at 100km/h. By the time he got to Mallala I had passed him and had time to jump out and take a photo as he came into Mallala...
Thanks for the adventure and my 900th find!