I too have played around with the new F12002 demo, and I have to say... thats quite impressive!!! The gameplay wasn't up to GPx standards though (and never will be!) and the buggy gfx were annoying, but some of the features like pit limiter, a proper launch control system, the freedom to drive into any pit garage you damn well please... but most of all, those sounds!!!!!! WOW!!!!!! The external sounds were sooooooooo sweet... they sounded exactly like an F1 car! It got me pretty excited...
then I realised how good GP4 would be, because it has these features, gfx, and breathtaking sounds...and better gameplay!
F12002 is gonna kick ass... but GP4 will make that look like childsplay!