Completion bonus:
Successfully complete the game in story mode to unlock the photo gallery,
concept art, pre-production gallery, and credits.
All circuit racing cars:
Successfully complete the game with an "A" rank in all levels.
All stunt tracks:
Successfully complete the first four set of stunt tracks with an "A" rank to
unlock the first bonus stunt track. Complete the bonus stunt track with an "A"
rank to unlock the second bonus stunt track. Complete the second bonus stunt
track with an "A" rank to unlock the third bonus stunt track.
Extra options:
Complete all circuit races in first place in each them to unlock extra options
at the game option menu.
Successfully complete the four stunt tracks and the three bonus stunt tracks
with an "A" rank to unlock the option to have police in free ride mode.
Sites: