The first demo was very messed up but at least with a huge amount of tweaking you could get it drivable. The new version is a total disaster. The physics and controls are beyond hope. If you barely even touch the steering when correcting it suddenly and violently flings your car around as if traction suddenly went to superglue levels and you had yanked your wheel all of the way to the side. I really wanted to like this. It does look nice and I like the idea but forget it. What a joke.
There are several very good racing games which are being released at this time and most of them have demos. Try them instead.