Very nice. You really mess with the speed a lot, I like that, no need for regular speed in most of them shots, great way to cover ground without us audience getting board.
I've seen more of the world since I got into quads, and started watching people's videos, than I'd ever seen before it.
Some really nice footage in this. Thanks for sharing.
And I agree with the comment above about good use of speed changes. The slow down over the dam wall worked really well, as did some of the speed ups over large areas.