That sounds like it was me driving, I often drive on the other side of the road.... for some reason the drive is smoother on the wrong side of the road.....less pot holes for some strange reason.
Did he show you evidence of damage on his car..... sounds like he was trying 2 scam you for some cash....
If it was true, why didn't he report it 2 the police and let them deal with it?
Mate, in a nice way, tell him 2 stick it where the sun don't shine