The latestversion of GoogleMaps is available forAndroidusers running Android 1.6 andhigher, and will be coming soon to BlackBerryusers on themobilewebsite.
This included a weekend in a remote area of North Carolina when my cell signal was roaming and several car rides when I used BlackBerryMaps for navigation.
However, indoor Google Maps only works on Android leaving Apple (WiFiSLAM), Microsoft (Bing Venue Maps), Nokia (In-Location alliance) and Blackberry looking for alternatives.