Intro sequence graphical effects:
     If  you  press R1 during a portion of the intro sequence you will
cycle  through  three different graphical effects, black&white, yellow
tint and a blur effect. press L1 one to cycle back again.

Pac-Man mode:
     Race  more  than 3,000 kilometers in total distance to unlock the
Pac-Man mode.

99 lap mode:
     Beat the top score in each race of the Time Attack GP in Extra Mode.

Duel mode:
     Beat the Standard Time Attack GP.

Onscreen display:
     Hold Select while racing in third person perspective to get misc.
onscreen info.

Bonus cars:
     Finish  the  following  races  in 1st place to unlock the cars in
Free run, Time attack and Duel mode:

Rivelta Crinale race  -  Unlock Devil Drift 
Danver Spectra race   -  Unlock 50's Super Drift Caddy
Kamata Angelus race   -  Unlock McLaren F1 clone :
Solort Rumeur race    -  Unlock VW Beetle