Sorry about the bike. I know it suck to have anything happen to it, especially at the hands of someone else. Was there any damage other than the front fender?
I have started to line myself up with one side of the car in front of me for two reasons:
1. The driver in front of you can see you in the side mirror, and it makes it harder for them to back up into you
2. It gives the driver behind you somewhere to go to avoid hitting you from behind.
3. It makes it easier to get out of there if they are still aiming for you.
The drivers behind me seem to get the idea and line up to the side of me so they won't hit me even if someone hits them. I have tried to think of which side is best, but I can think of situations where either side would be better than the other.