Letting a turbo by, for shame! I like the armor all on the tires and the wheels spinning forwards and backwards, I can never get mine to go backwards on the track...
Two things I'd say about the actual driving: 1) Stay on the power more, you are a bit abrupt on and off and on the power, smoother will be faster and 2) You can use the rumble strip if need be, that's what's it there for to be afraid to use the entire track and then some!
Looks like fun and can't wait to see the stitched together video. I wish someone had a multi-camera HD setup, I'd be all over that and put some cool footage together...
If I had time that is...