I think the grading is too dark, I can barely make out some of the detail on the cars.
Probably worth fixing that before you render the finished film.
What are you using for grading? Some professional editor/producers I know are using DaVinci Resolve (from BlackMagic Design) and you can get the free version if you not using it commmercially:
http://www.blackmagicdesign.com/uk/products/davinciresolveThe shots themselves are fine, but considering it's a trailer for a video about drifting, there's not enough actual drifting, it looks like it could just be another video of static cars from a show.
Personally, the cloud shots at the start, I would have done timelapse to have them moving faster and to bring up the pace of the video enough for moving cars.
Will watch the final product with interest.
I'm heading to the same area of Scotland in a few weeks, so hopefully come back with some decent photos, but not planning on video.