I think GT5 developer will be very concern about exploits about being a Professional Race Driver for Nissan Contest (of course they'll test you on your car skills in real life after this contest is over in GT5 Leaderboard which I can do above average but still learning to maintain my 370z nismo in perfect handling)
btw this is for anyone who ask for exploits for this contest:
I would love to be a professional driver for Nissan but if anybody without prior knowledge about cars or even handled a performance vehicle before (or at least owned and knows in and outs of your car like finding a needle inside a haystack and shoving it back in and finding it again without effort) then you would be kicked out, also there is an age requirement and again not for KIDS
btw all other inquires, I would like to find a way to get max credit (like AR MAX for GT4) and trophies hack
but probably it will be hard but will find some way soon