Could it be?
Near the end of our official Nintendo booth tour today, Billy pointed up at the huge video screen and said "Look, F-Zero!" They were showing a video of a racing game with futuristic hovercraft vehicles zooming around tunnel-like tracks. The cars looked very much like those in F-Zero: Maximum Velocity for GBA. We don't want to jump to conclusions here, as no name or logo was shown and the clip was short, but it sure did look like F-Zero, and it was definitely on GameCube. NOA reps so far have said they don't know anything about it, but we'll keep digging.