I would file a report as soon as possible. There is probably a law requiring (and him) to file a report within a certain time period and there are penalties for not doing it.

He will probably be a master at delaying and will try to delay you past the legal time limit. Also, he has an obligation to provide you with drivers license etc. If he refused, there are probably penalties for that too and his actions come close to hit and run.

Have you seen a Doctor to see that your neck is OK? Sometimes injuries do not show up right away and if you say you are uninjured and later find that you have been, it might be too late for action there too.

Hope you get him good.