It looks as if you had a lot of fun. A couple of suggestions, one is that it is too long. One can only watch so much landscape as you zip by. You never mentioned which GoPro you were using. I would have included some narration, commentary, or sound bytes. For instance, driving by a cornfield, and telling how exciting it is to see an actual cornfield where Orville Redenbacher grows his popcorn. Each time you film a scene talk about what makes it so great. One other suggestion would be to make your pans sloooow. CMOS sensors can make your pans jerky, so when you move the camera left or right, make it slow. You can speed it up in post.