It's changed quite dramatically, as our ambition for PGR 3 has always been to really drive forward the whole idea of style, speed, daring, and Kudos. The premise of this advance is to make sure that everyone is catered for, whatever their skill and however they want to race and progress. There are so many different ways that gamers want to take on a racing game that we needed to make sure that everyone can pick up and play the game, and enjoy it the way that they want, whatever their preferences.
PGR 2 was focused around car groups, as the player raced through one set of cars and then progressed onto the next group. The major change this time round is the game is split into unique championships—sets of themed events that the player will be able to race in any car he owns. He can complete the entire game in his favorite car, or choose a different car for every race—it's totally up to him. There's also much more choice over what sort of races the player wants to enter, based around different racing disciplines.
Ultimately, the player's main goal is still to reach the top rank. But in PGR 3, they can now do that however they wish—whatever their driving style—buying whatever cars they like and racing them in whatever championships they like along the way.
Obviously, the old favorite elements like Kudos and the Garage are still there, but with the whole experience now tuned to make PGR 3 a personal experience, however you want to race.