Yeah no one has the right to key anyone elses car but their own! It is just dispicable, childish behaviour, and yeah would be good if the story was not from a freind of a friend, I am not doubting the vadility of the story, but due to human nature stories tend to gain things on them as they are passed along.
No I am not implying that you or your story is exagerated in any way shape or form, but unless you were there, and saw for a fact that this guy in the skyline did the damage then what grounds have you got to stand on?
Yes it was a very bad coincidence that this happened after the argument and that the other driver, might or might not have hung around, but to go out and accuse of someone in this coloured car did such and such and so and so to my car is just childish in itself.
All that said a dingo stole my baby!