FreeRider not see the ground or other element in the game is a Poor video Card or Setting!
I had that problem when installing the program on an old pc. The video card was very poor to run the graphics of the game. I Install an old ATI Randeon 1300 video card, and the problem was solved. First Check the setting of video card and (BIOS)
I' post a video reference for people having this problem.
sorry for my English, my main language is Spanish. XD.