I was reading that they are trying to get back some of the exclusiveness of the Gumball limiting numbers for 2005 to 100 cars and not letting in many normal cars got to have something special to get in (911 was classed as normal)
Good discussion on it here
http://www.m5board.com/vbulletin/showthread.php?t=43461 not sure how it will effect more standardish cossies entering in the future ? probably have little effect on car 57 as it is something special.....
Dunno how true it is though