Before a race actually begins, you see yourself in a spinning camera mode. While the camera spins around you, you can make a wheelie AND spin around in circles, in one place. First, hold the Z button and pull back on the control stick. While you're in a wheelie, move your bike left and right. While you do this, the camera will stay in place. You can do this for as long as you want, but if you let go of all the buttons, the race will begin and you'll be left behind. So, make sure you spin back in front to begin.