Idea great - Execution fails - waste of money

I was super excited when I saw this! And gladly paid.
But its a too large file to download on wifi as an international tourist trying to find a good wifi near the location.
Then in using the app the location feature just would not work. Re-starts, changed settings etc..to get the location services to recognize my iPad. But then in this remote area with no cell service, it would not find any updated GPS locations...and the point of the app to auto-play as you drive didnt work.
Very frustrating as a great idea!!
How do I get my money back?!

BangersAndMash about Icefields Parkway GyPSy Guide