Google just announced that Googlemaps can be used in offline mode in Android devices.
http://google-latlong.blogspot.fi/2012/06/go-offline-with-google-maps-for-android.html
Do you think something like this could be possible for PC as well using WebGMaps?
We'll need to investigate this, this will most likely be bound to a new version that will need a separate deploy.
Not sure if this will be available for Windows. We'll inform as soon as we know more about this.
Thanks for your quick reply.