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VARIOUS HINTS
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¯ Hidden cars:
  Mitsubishi Lancer Evolution VI:  Select career mode and win the 1.6L FWD
                                   championship in V-Rally Mode.
  Subaru Impreza 2000:             Select career mode and win the 2.0L 4WD
                                   championship in V-Rally Mode.
  SEAT Cordoba Repsol:             Win the Pirelli Challenge in Challenge Mode.
  Toyota Corolla V-Rally:          Set a record time in all circuits.

¯ More challenges:
  Win the Michelin Challenge in challenge mode.

¯ Reversed tracks:
  Beat the record of all four tracks of a country to unlock the reversed
  versions of these tracks.

¯ Car preview:
  With the C-stick, you can open the doors, the hood and the trunk of your
  car at the car selection screen.