Originally Posted by black thunder
gps doesnt require a cellular data plan. you can do turn by turn gps nav
Originally Posted by Larrymc311
Thanks. This would be an awesome addition to any car then.
This is only partially true.
Offline Google maps allows you to cache an area (open up maps, drag a box around the area you want to download) but it will only allow you to download 100mb worth of data per area. So you can't exactly precache a map of the entire state for example.
Offline Google maps are basically just an electronic version of a paper map.
You can get a third party app but it is extremely hit or miss (mostly miss).