I got all on sivler and now going for all on gold to get the Merc. I have all Super car challenges at platinum and even got to position 137 on one of the races. Same page as Riko Ninja! I have also completed all the speed camera challenges at platinum. I think I'm Kudos rank 41 at the mo. Absolutely loving it too. I reckon I can get all on platinum except the cone challenges so I may try all of those next before spending hours on the races. One hint is to learn a track inside out and then go through all the classes and do all the races on that track. Works for me. Brilliant game but I want one of them TVR 12's for live although I've still yet to get beaten by one in my 911GT. I guess 99% of them are action replay jobs.