This is what I would do if life was a TV show.

1)Get the turn signal lens and run it through a manufacturers database, this would give you the make of car.
2) Take a sample of the paint that is left on your damaged bike, where the car made contact. Run this through a database to confirm the colour.
3) You should now know the make and colour of the car. As with most TV shows there would only be 6 matching cars in the entire state, so finding the drivers should now be easy.
4) The cops arrest him, you get a HUGE pay out, he gets the electric chair, and the credits roll.

Unfortunately, life isn't TV so I'm afraid nothing can really be done. I would feel very angry and bitter if it had happened to me, so don't feel guilty for wanting some kind of revenge. The world is full of people who have NO RESPECT for any one or any thing.

CHEERS.

Mark