19-09-13, 09:39 PM
It's a bit late now, but (presuming you have a phone with a camera) get pictures of where the bike ended up, the damage to it, the damage to his car, numbers of nearby cars if you can etc as soon as possible. The more evidence the better.
A pic of the dent on his wing and the corresponding damage to the bike could show that there's no way you'd have hit it *unless* he had moved over.
A pic of the dent on his wing and the corresponding damage to the bike could show that there's no way you'd have hit it *unless* he had moved over.