Rogo-test

rogo-test is a hidden track found in the original Gran Turismo. It is an identical copy of Autumn Ring Mini. The only differences from the final iteration seems to be the inclusion of the Chrysler Corporation Pentastar logo and the old Chevrolet logo displayed on advertisement billboards around the course when loaded in the NTSC-U and PAL versions. When loaded in the NTSC-J version this track is exactly the same.

This track can only be found in Gran Turismo, however it is not accessible without a cheat device.

Bugs and Glitches

 * The vehicle reflections appear much brighter than normal when driving on this track. So much so it is sometimes impossible to tell what colour the vehicle is.
 * Textures seem to be a bit sensitive in this version, when viewed at certain angles the color palettes seem to fade on some objects.