Found this on the internet, not sure on the credibility of the source or whether it has been posted before:
Great news for those trophy hunters, Polyphony Digital are deciding to put in multiple platinum trophies in the game, this is odd for single stand alone game to have the pinnacle trophy “The Platinum” multiple times. At first we laughed at this information contribution because we thought our insider meant the “in game” 1st 2nd 3rd place medals and trophies that are usually associated with Gran Turismo. That aside the Sony insider wasnt joking and hinted that to get just one true PSN trophy in GT5 would take the racing junkie 2 whole weeks and the developers are figuring out which method to go with. So expect trophy packs, each with their own Platinum.
Gran Turismo 5 is the biggest racing game EVER created and they are contemplating spreading trophy packs covering standard racing (GT mode) Rally Championship, Formula 1 racing, Le mans 24 and even NASCAR, this game is 5 times bigger than the most highest rated racers out there. From what we know, expect more news as the game comes every closer to being released.
Get ready for the ultimate racing simulator come November 2nd 2010, once this title arrives PS3 will have taken the crown for the racing genre.
Here's the link:
http://www.spitpod.com/2010/07/rumour-gran-turismo-5-to-have-multiple-platinum-trophies













