Steve Featherkile said:
Gan --- Ghan Must be similar to the difference between tire and tyre. :DThat’s what I like about HJ, always quick to point out what he perceives as someone else’s shortcomings. Eh? Or is it A? I always get confused about that.
Steve,
The Ghan doesn’t cross the Nullarbor, that was the point, the Indian Pacific does. 
A map of Oz will tell you which railway line crosses which part of the country.