I forgot about the GT HI FI mode, if you complete the GT world championship, or win everything in arcade mode, you unlock a mode called GT HI FI, I think you access it in the Bonus screen in the arcade mode. It's 3 tracks, CSR5, SSR5 and SSR11, only most of the buildings have been removed. It's a smoother framerate and I can't remember exactley but the textures may be better too. Anyway, once you've unlocked it, you can race SSR11 in there.