Google Maps App for iPhone Goes in the Right Direction - Review - NYTimes.com

But you should still be careful in Australia...

"Along with driving directions, Google Maps gives equal emphasis to walking directions and public transportation options.
This feature is brilliantly done. Google Maps displays a clean, step-by-step timeline of your entire public transportation adventure. If you ask for a route from Westport, Conn., to the Empire State Building, the timeline says: “4:27 pm, Board New Haven train toward Grand Central Terminal.” Then it shows you the names of the actual train stops you’ll pass. Then, “5:47 pm, Grand Central. Get off and walk 2 min.” Then, “5:57 pm, 33rd St: Board the #6 Lexington Avenue Local towards Brooklyn Bridge.” And so on.
Even if public transportation were all it did, Google Maps would be one of the best apps ever. (Apple kicks you over to other companies’ apps for this information.)"

Google Maps App for iPhone Goes in the Right Direction - Review - NYTimes.com