At WWDC19, Apple announced that controller/mouse support would be added in to iPad OS. BeamNG.drive could be compatible with iPad OS since controller support has been confirmed. The game could be compatible with this and have the main files installed into the Files app. Mods wouldn't be a problem either. You could download them and when you're on the download page you could select "Copy to BeamNG.drive" and it would be installed. Keyboard shortcuts will be available in the menu. Is this possible?