In my oppinion and from what I have seen Most people will try and help make things right.
I have had a friend get his dragster dented and scratched from a guy on a bike in the staging lanes and the guy paid for the damage.
I have also had a friend accidently have his tire fall off the car and roll into another guys car. He was going to pay for the damage but the guy was being a TOTAL Az-hole and the track official heard the comments being said and told my buddy to just leave and not worry about the damage.
They signed the form when he entered and that my buddy didn't owe him a cent for the damage.
It is up to the people involved but most people will make it right if you don't rape them on the repair costs and handle it in a polite way.
Just my