The google maps part of the application is where the majority of the data is going to come from. I believe that the app will utilize the google maps cache on the machine but the download of the tiles is the largest use of bandwidth.
That was my thought as well. If it's a couple of megs it's no big deal, but if an hour of flying starts to chew up a 100 megs or something like that, it might be worth knowing about.
Anyway, I'm going to buy your app this morning. Looking forward to some good flying fun.
