Carl...NZ...AC/DC...
Keep "NZ" in your name no matter what name you choose, because it reminds me that you are from New Zeland. Plus I totally agree with G-man when he said that your name does not need to reflect what car you own. Your signature in your profile can do that, which I think should be a standard courtesy on this board.
"It's a long way to the top if you wanna to Rock n Roll"