The novelty of flying around over a few cities will soon wear off; there are probably games that do that better anyway. A gimmick like that doesn't really add useful functionality to a maps app/program.
Instead of getting excited by this relatively useless feature, we need to hear what is going to happen to the Google-based map apps we are using at the moment. Will Apple continue to permit their use, or will these apps be removed as soon as we update to iOS 6?
Having lost the use of one extremely good app last year when Apple spitefully disabled it, I will be looking for crystal-clear reassurance that the Google-based map apps I am using now will continue to work in future before I go anywhere near iOS 6 and the new Apple maps app.