Dad is a really agro driver and once got into a road rage thing with some other guy. The other guy ended up getting out of his car and I suspect dad went to lower the window a smidge so he could mouth off but the window automatically went all the way down. FAIL.
The other dude grabbed the old man's glasses, screwed them up and threw them at him. The cops couldnt do anything because dad couldn't describe the other person well enough. Sounds to me like he got what was coming to him but the point of my long winded story is that it can be difficult for police to do anything.
Insurance companies on the other hand seem to have their own set of rules. In their books you're partially at fault just for being out on the road. Go figure.
It's a shame you didn't get a few snaps on your camera phone of his car, his damage and his rego. Makes it harder for them to say "I weren't there".