Unlock All Cars and Tracks
At the title screen press up, right, down, left, up, left, down, right, up, down, up, down.
Camera options:
Win all Challenge Cup events to unlock the "Flipped-cam", "Mashed-cam", "Oz-cam", and "Retro-cam" options at the "Bonus Features" menu.
Quick start:
Press [Gas] on the on the fourth beep during the pre-race countdown.