You can save all your stuff to a external Hd and then transfer it back when you get a new ps3..
When i had Midnight club i was s**t on saving, so my mate saved his and sent it over msn, i saved it on my mobile as a data format and then uploaded from mobile to ps3 and hey presto i had his saved game with all the top cars
When i had Midnight club i was s**t on saving, so my mate saved his and sent it over msn, i saved it on my mobile as a data format and then uploaded from mobile to ps3 and hey presto i had his saved game with all the top cars