There is more chance for some "jailhouse justice" than you may think. As a former law enforcement officer I was told for years that prison inmates hold child molesters in a very special regard. They are seen as the lowest of the low in inmate society and are rumored to live in that way by all means available. Happy Hunting!!!
While I don't disagree with the car being confiscated on the face of this issue let's be fair in looking at the overall picture. First, the vehicle should have had all emergency equipment removed by the releasing agency. Second, the disposal on Craiglist appears to have been done in violation of the agreed process between releasing agency and the salvage company and at that point should have at least had the equipment removed by the salvage company. And what should have been blatently clear to the new owner...he should have known that no law enforcement agency would pass him up once they saw the car registered privately in this condition. Private citizens cannot operate a vehicle outfitted as such except with various exceptions ( restored antique, parade vehicle, etc ) where as the eguipment is present but electrically/mecanically disabled.