I live my life on the edge. Of 1% battery power. Get on my level.
  1. Take screencaps of successive parts of your route on Google maps.
  2. Then, go to Airplane til you get where you're going to save power and use the pics to guide you.
  3. So, like, use a map. The regular/non omg-GPS-is-real-cause-we-live-in-the-future-what-does-it-all-mean way.
  4. Never mind. This is not that clever. Maybe everyone already does this. Byeeeeeeee.