If you put your phone into the Airplane mode (a "true" offline) - the phone will take much longer to find your location. You will, at that point, need true access to open sky and phone might take ~5 minutes or more to get a fix, as at that point, there is no assisted location information like cell phone tower location, WiFi network location information etc. It should not matter if you are in Drive or some other app, but:
- Downloading maps for the specific state / country locally on the phone
- Putting Drive itself in offline mode
- Putting the phone into the Airplane mode
- Having an open view to sky
Should give you a fix within ~5 minutes. You should get a fix in Nokia maps or Nokia Drive, I think, either way.