Update 12/11/12: Apple pushed out an update on 12/10/12:
In response to the warning, Apple pushed out an update to Maps earlier today that has Mildura in its correct location. Presently, it is being reported by the Guardian that Apple Maps still lists another Mildura as being located near the park, but that the false city isn’t displayed in searches. The problem originated in September.
--- original post 12/10/12 ----
Victoria Police yesterday urged motorists not to rely on the mapping system on Apple iPhones running the latest iOS 6 system after a number of motorists were directed off the highway in the past three weeks and stranded for up to 24 hours without food or water. ...Tests by police confirmed the mapping systems listed Mildura in the middle of the park, about 70km from the actual location of the city [Mildura].
Now, that happens quite a bit with other mapping systems, too. Further, it's hard to imagine iPhone users were not aware of the issues raised regarding the accuracy of the new Maps app.
Sergeant Tony Keely of Ouyen, the next centre south of Mildura, said a number of motorists had turned off "perfectly good bitumen roads to follow their phones up sandy tracks into the scrub" before realising something was amiss.
The police have contacted Apple (with no reply to date). Perhaps the police need to highlight common sense and personal responsibility, as well as pointing out what the tech press have for many weeks?