Ms Wake says her car blew a tyre and eventually became bogged.
Now I'm no familiar with this route but I would be reasonably confident that driving from Adelaide to Mildura wouldn't involve 5 hours of dirt roads - especially ones that caused you to become bogged.
What happened to common sense?
At what point do you say "Hmmmm.... this doesn't look right? I think I will turn back and get back on the main road."
We have a similar issue in Tasmania where people attempt to cross through a dirt road at high altitude in the middle of winter because "Google maps say it is the most direct route"....
Y-e-a-h... the 'shortest' maybe but surely your brain would tell you that a dual lane sealed highway is going to be a quicker way to get from A to B even more so when there is SNOW around?
Do you have implicit faith in your GPS?
Or do you still use maps and common sense?