I think it is 90% the driver, and 10% the car.
I have own my r33 gts-t for about 4weeks now and have being driving it around on my L's, and i think the driver has to respect the cars power and know how to think about the risk before doing something like speeding, draging, drifting ect ect.
I find that most of the time i drive just under the speed limit and well contiune 2 do so on my P's as i know i am young and dont have yrs of driving behide, so if i speed/drag/drift and something goes wrong i will not know wat 2 do and therefore be more likly 2 do the wrong thing.
I have done some wrong stuff and learn from them and will never do that stuff again untill i know i am able 2 controll wat happens
just my 2cents