Get a Gold medal to unlock the following bonuses.

Amran Speedway Challenge
Empress Yei Memorial Trophy
Imperial Die Bak Eliminator
Mata Wai Speed Challenge
Machiko Hughes-Murata Gallery
Machiko Hughes-Murata Racer
Mata Wai Invitational
Mata Wai Speed Challenge
San Kei Image Gallery
Wire Throw Industrial Chips Shield