You have two choices....
Go to the police station and tell them what happened and hope they find the person you pay them back for the damages and the world is all sunshine and rainbows again...
Or
forget em and hope he didn't write down your licenses plate.
I bumped it going like 0mph as I was pulling into a parking space. I didn't see a dent or anything, but I probably scratched their paint. T~T
Oh.
Well your forgeted I would recommend tracking down and killing the witnesses.