Brigzy,
I'm so sorry for what has brought you here. I know you and your son have got to be hurt.
I think you need to talk to a lawyer....ASAP. I'm concerned with your responsibility in all this mess. You stated that he forged your name on documents for the new truck so are you going to be expected to pay for it? Personally, I would not want him driving a vehicle that was in my name. If he is nodding off, it seems like it is only a matter of time until he will be in or cause a serious accident.