Ubisoft has been giving away games for free each month since June as they are celebrating their 30th anniversary. Other titles include Price of Persia: Sands of Time, Splinter Cell and Rayman Origins. Unfortunately, they aren't automotive related.
Those who have the time and/or hard drive space to download the 21GB game will be able to race in an open world concept where you will not need to follow fix routes to win races. The game is based on a scaled-down version of the United States of America and you will be able to spot unique geographical details from different parts of the country. Interestingly, it takes around 45 minutes in real time to drive from coast to coast in the game.
Interested? download it here!