Sorry to hear about your car, even if it isn't an NSX.
I got rear ended by someone a few years back in my G35. He pleaded with me not to call the cops and then began to throw a tantrum as I dialled. I was seriously preparing for a brawl. Obviously he had something to hide. Not that it matters, but he was white.
There was no way I was not going to file a police report. 7K in damage, not to mention the apparent reduction in value of the car by virtue of the accident.
Turns out, suspended license, and apparently warrants for his arrest. He was hauled off on the spot. Thank Jesus he had insurance. However, the car was never the same and I sold it shortly thereafter.