From the manual
Grand Prix 4 is the latest evolution of the Grand Prix series, which I [Geoff Crammond] started writing over 10 years ago. Machines and techniques have changed a lot since then. For example the sheer scale of the project has increased enormously. Over 60 man-years of effort alone have gone into the game since Grand Prix 3 was released in 2000!
With Grand Prix 4, you'll see a huge leap forward in the look of the game, with the inclusion of a new graphics engine specially designed to use all the power of modern graphics hardware support. And for the first time we use GPS data to make the racetracks as accurate as possible - the actual road layout, width height, gradient and camber, as well as the all-important kerb shapes and profiles, should now be there just like real life.
Grand Prix 4 simulates the 2001 FIA Formula One World Championship.