In the quest 'Flight of the Wintergarde Defender' that you get in Wintergarde Keep (Duh..) from the Flight Master you get Wintergarde Gryphon Whistle. What's so special about this whistle?
U GET A FREE flYIN MOuNT!!!!11
You use this mount to fly around and save people. lolsike. Like that's going to happen.
I have been using this to fly around, and even though I get a message that I'm leaving the fly zone, I can continue flying. Maybe this is just a glitch, but I have been able to fly around everywhere.