Small bump.
I've just noticed that theres a demo released for the Xbox 360. Not sure whether the PS3 has it. For those of you in the UK, it's in the "spotlight" channel.
You get to drive a Lotus Elise, BMW M3 E46, Dodge Viper, Nissan GTR R35, and a Pagani Zonda F (this has to be unlocked first by earning 10 stars.) around London, UK and Spa Franchorchamp, Belgium.
My first impressions of the demo were kinda mixed. The physics are definitely an improvement, but they just don't feel right. Although im using a joypad, the steering doesn't seem to move very fast, thus resulting in it being very easy to get into a tank slapper. It also makes you lack confidence when taking corners, as the car seems slow to respond, even if it's something lightweight like an Elise. I only played it for an hour or so though, so i'm probably still not used to it. As of now though, im not impressed enough by the physics to warrant me buying it, although i will admit that the Graphics, modeling and sounds are very nice.