There was a video that came out about a year ago that had the Zelda demo thing and after that was a racing game, I think in a city (Tokyo?). I think it was Tokyo Street.
a) Was that a real game?
b) If it's not, do you want Nintendo to make a racing simulator (like GT for PlayStation and FM for Xbox)? I think it would be pretty cool to see Nintendo's take on it and it would fill a gap in Nintendo's library.