The most important thing in GP4 is the possibility to keep upgrading tracks and cars.
on the other hand, its a game built almost 10 years ago, and we still cant upgrade things we really need to ie Engine sounds for each car, number of cars in game, an improvment on A.I and a bunch of things we all know.
Even with all restrictions we have, GP4 will be present for a long time.
CODEMASTERS 2010 is a new experience. a higher level graphics, a god IA, good out of track scenes and options.
Im sure we will have a patch to fix all bugs found into a short period as seen on tons of you tube videos. so Lets wait.
But, if. I SAID IF, someone start to make tools and create more possibilities to this game as done in GP4, the game will subistitute GP4.
i ll keep playing BOTH so far.