I tried the demo of this last night.. Not sure. I've been playing Grand Prix 4 and Gran Tourismo for years, I play GP4 with the 2007 mod and various other add ons to make the game look better and handle better etc and its excellent.
I also play Dirt, and Grid a lot. Not too keen on Dirt 2, its ok and I hated NFS shift.
This felt, well a bit empty... I don't know, the game drove perfectly fine, easy to pick up, very hard to master. Might give it another go, but with Grand Prix 4 2007 mod, F1 2010 around the corner and GT5 as well - might skip this..
And, I have no idea how to get the 2009 F1 season, I found FSONE 2009 but I guess you'll need the full game, but is that a full 2009 season? Can you play single player? Or online only?