From Wired’s preview of PGR3 on the Xbox 360:
PGR2 focused its processing power on cars, not their environs. In PGR3, cities are 10 times more detailed. And – even though they’re usually just a blur as you whiz by – thousands of individually modeled spectators react to the action, cheering winners and jeering losers.
Yep, that’s right. Your hundreds of dollars of computing power are going into rendering even more accurate crowds that you’ll never actually see and won’t make the blindest bit of difference to how the game actually plays. Well, please excuse me if I’m not frothing at the mouth with excitement here.