Three things due from your team:
1. A sketch of the shape of your racing track, with whatever vehicle/character is taking the place of the "car" included.
2. A sketch of your title screen, which should give some indication of font style.
3. A sketch of a "story" screen, giving some context for the game. If the vehicle is a helicopter, who is the pilot, and why is she/he taking flight? Lay out the objective of your game. This should be some combination of snappily written text, and images giving a sense of character and environment. It can be one main image, or it can be several images broken down into comic-strip format. As a reference, take a look at how "blockade blitz" lays out its story: