It's a completely different game with a whole new set of mechanics that completely change the game from what driver has been before. It also has superb, actually funny writing and a nice story that never takes itself too seriously.
The idea of "pulling out" of your drivers conciousness and possesing any other car in the cty in real time is amazingly well pulled off. There are a lot of variations to the mechanic encouraged by different instances (possesing other cars on the opposite direction to crash your opponents, having to destroy a particular car by getting a heavy one and crashing it, having to race with many cars at once, trying to come out both first and second in a single race).
Each character you posses in one of the missions or side missions is a person with a different personality and in a different situation that has its own story, so you basically go around in many different tid bits of story from different character's perspectives wich generates the good writing I was talking about (the dialogues are fantastic), and in main story missions gives you a good perspective on what's going on with the story from different perspectives, not just your main character's.
It's great, great stuff and since day 1 it was pretty damn clear that it has barely anything to do with any other Driver game.
I get your point, I also hate every single Driver game (yes even the first one, hate me all you want) but this one blew me away. If you dont believe me just gather general opinion through reviews and whatnot, it was really succesfull critically, even if it didnt sold much.
what im saying is: I know you want Hot Pursuit, but if Driver wins: buy it.