Phors, glad your son will be okay.
I would think that since he did due diligence in stopping for your son and taking him home and waht not, hes not gonna be hauled off to jail. I personally wuld have called the police to cover my rear end but I can see where sometimes you don't especaily if you son said he was ok. I hope he starts to feel better. I bike myself and always worry about this. He should be covered under the guys auto insurance probably.
There was actually two incidences here (that I know about,) where cab drivers tried to drive away after hitting someone
so their insurance rates wouldn't go up.
The first incident, a cabbie clipped someone crossing the street. The cab stopped for a moment. The person was clearly limping off to the side walk to get out of the road. The cabbie then tried to drive away, without even getting out to check on the pedestrian he hit.
About 5 people jumped off the sidewalk. Three ran and placed themselves right in front of the cab, banging in the hood, yelling for the cab driver to stop. The other two tried to open the doors to get in or haul the driver out. I have never seen such a furious mob. It looked like one of those mob riots that you see on TV. I wouldn't have been surprised if they had hauled him out of the car and pummeled the driver for trying to drive off.

Someone else started taking down the drivers license right away, in case he tried to speed off again & someone else called 911. Others went to help the pedestrian.
He finally pulled over to exchange info. Police hung around until the cops showed up to make sure he hung around to do the right thing.
The second incident was a woman I met, who said she had a hip injury for about 8 months. She was in the back of the cab when another cab hit the side of it, full on. She went flying across the cab, into the door. Hit her head, leg & hip.
The cab drivers, got out of the cabs. Instead of checking on her, they went into a screaming fit at each other.
The woman got out, extremely dazed and went to sit on the curb, really out of it.
The cab drivers asked her if she was fine. She was so out of it, she wasn't sure. THEY told
her she was fine, and BOTH of them wanted to run back into their cabs, (after exchanging info with each other about the accident, and just
leave her there at the side of the road, as neither of them wanted to take responsibility for her injuries.

A bystander, jumped in, spoke up, and said you can't leave her there, that she was
obviously injured, dazed and confused. She called the police and made the drivers stay till the cops arrived.
If it wasn't for OTHER people at both these incidents, the drivers would have driven away. Not saying it happened in the OP's situation, but sometimes, people would "like" to think the person they ran over to be alright, instead of doing the right thing, especially when doing so works in their favor.
In the OP's situation, the driver should have given all his contact info, in case there was a problem
later. He hit a person with his car.
