Here is yet another, slightly better than previous, video of "MAP THIS!" GPS viewer in action:
Actually, this shows a replay of a GPS data, captured on one of my field trials. This was done in order to get steady shot and good focus. Of course, it looks exacly the same with "life" GPS feed.
The clip shows the difference between "NORTH UP" and "TRACK UP" modes and the use of "zoom" functionality.