The scams
Swoop and Squat. A suspect vehicle suddenly swoops in front of you and jams on the brakes, causing a rear-end collision. Often the suspect car has passengers who pretend to have painful back or neck injuries, even though the collision was at low speed. The driver and passengers then make large collision and injury claims against your auto policy, for example.
http://www.insurancefraud.org/staged_accidents.htm
Probably the same group of lawyers who file for them too. I really have more respect for drug dealers than I do most lawyers today.