Go for Insurance claim
Sue him if he hit your car and cant cover it. That is his fault for hitting you.
You cant.
It depends on what kind of car you have. If you have a huge hummer or semi, you probably can. But if you have a Harley, no you cant.
file a police report.
Unless they are dead you cant sell the car.
It gets reported stolen.
Measure the height of the damage on your car and check the neighbors car for damage at that height. If you cant find any, you dot have any evidence on which to ake a claim.
Replace the car or Take it an alignment shop, they will tell you Cant diagnose without seeing the car
Usualy you can find that information in the owners manual. If you cant find it in there you can just take your car into a parts store and ask them. (It may be embarising but its the only way you can find out.) or Google it.
Run
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It is advisable to also report to the police that you hit a car because once they investigate and find out about it, it can end up into accusations that you hit and run and will make things worse for you.