First up you need to sort the format you've used. It looks like it was filmed wide-screen and then encoded in whatever you used to render that using 4:3 (old school TV format). The result is that everything looks pinched.
Did you use Windows Movie Maker, or something similar to do the video? The frame rate looks to be 20FPS which means you're dropping frames out of the GoPro at a rate of 10-40 per second. You won't get smooth footage until you have probably 30fps, preferably matched source to set up/output on your editing programme.
Next up, I think you used the sealed back. You should have used the open back on the camera, so we could have heard the motor a bit more. Even a bit of rain won't be a problem, as the front of the camera is still enclosed! If you were using the open back then put the camera somewhere closer to the engine so we get to hear some engine noise, which would make the video a lot more interesting.
Finally if you have a smart phone that does the same resolution video put it inside the car, viewing your hands on the wheel if you're camera shy, or all of you if you're not. You can match the timing with the GoPro and use that footage for cutaways, which will make the video a lot more interesting.
Nice road. Look like it would be dull as sh*t in the summer. 
Thanks for the feedback DH. A friend of mine did the editing, I know sweet FA when it comes to that sort of thing. It does look pinched and I was trying to work out how to convert from 4:3 to 16:9 on YouTube but it stumped me, like a rubix cube! I don't own the Go Pro, so didn't have a clue what was going on, all I did was drive. But you're correct in saying the back was sealed. Said friend had only owned the camera for a couple of weeks so was probably being over cautious

I don't have a smartphone either, basically cos I ain't dat smart innit

I do have a decent 16mp camera though, that I could mount to the dash, then you could hear the motor a lot better. Would adhesive backed Velcro work do you think? And if so would it be a thingy to get off again? I love the idea of cutaways though, it would make it more interesting. Sounds like I should send you the footage and you should work your magic on it

The edited footage of six and half minutes was cut down from twenty two minutes in total, so it's not a fantastic representation of what that roads actually like. In reality it's a belter, wet or dry. The only problem when it's dry, is its usually the summer and thus crammed with caravans and nearly deads, making speedy driving somewhat more challenging.
I'll have a bash at recording some footage with just my camera and see where that gets me. I don't have any editing software, so it'll just be motor and wind. But that's all I've got to play with
