Well it should be optional of course. I dont think if they implement more cars on track or better damage modeling the games is going to be different. Think of it as if you playing online crysis on med spec rig vs high spec rigs opponent, everybody experience different stuff dude, different physics and different lighting and special effects, so its not an obstacle at all!!! And from the link on the article i posted above, we know that PD can do this long time ago, so they wont even need to spend time thinking how to do it, they already did it, we just need to ask them to give it to us

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And with time passing and ps3 getting cheaper and cheaper this becomes more and more resonable way to go. Because 2 ps3s is a serious processing power even by today's standards! It is 2 Cells (a single Cell is more powerful than icore 7
http://n4g.com/news/333294/cell-pro...-new-playstation-3-codec-uses-for-transcoding) its 1 gig of super fast ram, and 2 crappy videocards, but hey gt5 rans graphicly pretty good on only 1 so 2 gonna make it look like next gen game!!!