I love the idea!
As some have already pointed out, the tutorial should be a one time thing maybe? or at least have a "hold to accelerate" button, but I can definitely see this succeed with some funky obstacles.
If you can find the time, would you please check out our game as well?
Our twist of the theme is that a critic tries to play your unfinished game, and you fight from inside the computer to make him like it. Hope you'll like it!