Thanks for your useful input. I'm glad that, knowing nothing about the question asked, you decided to answer anyway.
This app behaves much more like a standalone GPS device that you can mount on your dashboard; it has preloaded maps, 3d perspective, voice prompts, offline use, etc.
I've been using garmin's GMobileXT on my S60 phone for a while, which is pretty much an exact port of a low-end Garmin device, except it has data access and can use AGPS for faster locks. It's kind of nice for trips but 99% of the time I just need a quick answer, and the google maps application is more than acceptable (plus, it's been getting better and better lately: now it's got street view, latitude, layers, transit directions -- it already owns offline apps in all respects except voice prompts and the fact that you have to constantly press zero to recenter on your location.)