Why on earth would you pay $13K for a car that has 108K miles on it?
Keep looking.
Because it's an Infiniti? So it has 280 HP, 280 ft-lbs, RWD/AWD mixed mode drive, a solid and fast 5AT, extremely stable handling, a boat anchor for a brake system, a durable interior (108k, yet the only wear visible was some loose threads at 9 and 3 on the wheel), a luxurious interior (leather, Bose, sunroof, wood accents on jet black), and VERY mechanically reliable. It's as reliable as any car out there, despite being a high performing luxury car.
Because I figure despite those miles, I can get five years out of it without a major problem, which will put me out of school, hopefully employed, and therefore looking for a newer car because I love fast cars.
I probably will keep looking though, because that 90%+ certainty the car would be fine just isn't enough for my doubting mind.
I know, ICF, you and I have wildly different ideas on cars. For you, it's A to B. For me, it's A to B in the most spirited, quickest, and fun way possible. And for me, a G35x will do that better than almost anything else in that price range, while being more reliable than almost anything else in that price range.