There is an interesting possible criminal law and torts case out of Santa Clarita, California where a motorcyclist kicked a car on the 14 Freeway and triggered a series of accidents. The motorcyclist is seen speeding from the scene of the accident.
It is not clear in the videotape below what started the feud. However, the motorcyclist is seen pulling along side of the car and kicking the door. It is not clear whether the driver was startled and lost control or intentionally swerved. In either case, the car swerved right and then left. It then hit the center divider and catches fire. It then careened back into traffic and collided with a pickup truck, which flipped over.
The motorcyclist needs to be arrested. He left the scene of an accident and obviously engaged in reckless driving. He could also be sued for negligence. That could force a fight over causation and whether the car swerved intentionally as a superseding or contributing act.
Here is the videotape: