When you complete the game (100% status), you will unlock all of the following:
1.Ace level mode in single races
2.Toyota Pod Race
3.100,000,000,000 credits in GT3 A-Spec
(You must first have a Japanese GT3 A-Spec savegame on
your memory card, this bonus savegame only works with
the Japanese version of GT3 A-Spec)
4.2 movies