In my R30, I had rattles and clunks coming from it for ages, and some vibrations... Then I decided to do some burnouts and 'nuts. The car seemed to go alright still, until I accelerated accross and intersection on the way to the video store once, and there was a loud Crunch, bang, clunk.... rattle rattle..... And I had no movement... And car wouldn't rev lol...
That was funny...
I know what it was... do you?