The GRIDDemo_11.zip file you have requested: Official Demos / Race Driver: GRID v1.1 Demo - 892.45mb is not available. Perhaps try browsing all files for the game Race Driver: Grid and upload any files you want to share or are missing. This is the only information we could locate:
Codemasters has released an updated demo for Race Driver: GRID. The content of the demo is the same as the first released demo, but it includes the fixes as indicated in the 1.1 patchlog.