Last week (December 2010), I saw the same car with the dent and I'm wondering if he can still pursue a claim for the damage?

A: The answer is YES and here's why:
Section 5 of the Limitation of Personal Actions Ordinance Ch 5:06 provides: (since repealed and replaced by the Limitation of Certain Actions - Chapter 7:09.
“5. All actions for the recovery of any chattel or moveable thing, or the possession thereof, all actions founded upon any simple contract without specialty, all actions for damage or injury to persons or property, and all personal and mixed actions whatsoever, shall and may be commenced and sued within four years next after the cause of such actions, and not after; except, nevertheless, all actions by this Ordinance otherwise specially provided for, and except also all actions of assault, battery, wounding, imprisonment, or any of them, and all actions of libel and slander, which said actions of assault, battery, wounding, imprisonment, libel, and slander, shall be commenced and sued within two years next after the cause of such actions, and not after.”