I have been looking for a Formula 1 game to come out on the PC for some time now (the last one i played was Geoff Crammonds GP4), and was getting very frustrated that i could not reenact the performaces of Lewis Hamilton from the comfort of my PC.
Then i stubbled upon this game, which has been made to be modified by the players, so although the game does not come with all the F1 cars and tracks, there are mods out there that you can download and install to get that great F1 sim that the PC so desires. But its not just for the F1 fans out there, you can pretty much get any mod for which ever type of racing you like, you just have to search for it!
I agree with the comment above, to get the best enjoyment out of this game a good quality force feedback steering wheel is a must! Although i have a few friends who say its quite easy to control with an anologue joypad.
So to sum up, Great game, Great car physics, Highly addictive, a must but for any racing sim fan!