Can a PC demo be far behind?
I think the answer to that is yes.
As far as I can tell development for the PC version only started last July.
The 360 version is an engine update and mod of existing code by a megastudio, while the PC version is a total conversion of a racing car game by 20 nerds.

1 of these nerds reckons he was in the Swedish Special Forces. I think it is the one on the front right, nearest the camera.
If the PC game is coded and tested in 9 months flat, the odds of it being a good game are slim.
Hopefully this game will take at least another year and preferably 2.