The Gran Turismo Pit Stop
Arcade - Extras

1. Win at each of the arcade tracks with all 3 classes of cars. (A, B & C) Doing so on each track opens up a particular extra track.
   • High Speed Ring unlocks Autumn Ring
   • Trial Mountain unlocks Deep Forest
   • Grand Valley East unlocks Special Stage R5
   • Clubman R5 unlocks Grand Valley Speedway
   
   
2. Win at each of the extra arcade tracks with all 3 classes of cars. Doing so on each extra track unlocks a different manufacturer. The 4 manufacturers are Toyota, Subaru, Dodge, & TVR, and are unlocked in that order regardless of the order in which you complete the extra tracks. (Note: hidden cars can be unlocked before you have unlocked all the hidden tracks).
   
   
3. By winning all 8 tracks using all 3 classes of cars on the Normal level, the staff credit movie is displayed. This is now also accessible from the menus.
   
   
4. By winning all 8 tracks using all 3 classes of cars on the Difficult level, the "GT Hi-Res" mode is accessible from the menus.

Original author: albrnick