This specific version (v1.2.7.4) is typically found on platforms like or community modding sites. In the context of your query "useful paper," it likely refers to the documentation or white paper included within the archive (often a PDF or .txt file) that details:
: Information on the game's handling mechanics, which players often refer to as a "useful paper" for fine-tuning their racing experience. File: RC.Rush.v1.2.7.4.zip ...
: Steps for configuring VR headsets (like Oculus or Vive) or PC controllers. This specific version (v1