My friend bought a new car a while back...a loaded (everything but auto trans and sunroof) Nissan Sentra SE-R Spec V, bought it new, had ~15 miles on it. The clutch was totally gone (car would not move at all!) by 8k, the dealer basically accused him of abusing it. (Note: he put over 100K on the clutch of his Subaru GL, which had 90K on it to begin with!) The clutch went on the highway in 6th gear...totally gone in the space of 30 seconds.
It HAD to be a factory defect, but Nissan flat refused to fix it.