[Scott Douglas]

I got hit by a wheel/tire assembly. Here's the story:

Went to the post office a couple weeks ago to mail the property tax bill.
While waiting to make a left turn onto the street the post office is on, I got hit by a wheel that came off a Jeep. Guy was making a right turn and his left front wheel comes off, bounces across the street right into my bumper (wife's '13 CR-V). The guy drives his Jeep over to the curb on the rotor, I make a U-turn and park in front of him.
He gives me his license and a AAA insurance card. I fail to ask for his registration, my bad.
Anyway, the damage to the bumper at first looks like smudges from the tire hitting it, that will rub out. There are some scratches though that might not buff out. I was glad the tire didn't hit the headlight as it would have taken it out.
I photo the guys info, the hub sitting on the ground and leave after saying I'd try to rub out the paint myself but would be in touch if it didn't rub out.
I go home and rub the smudges off but the scratches aren't leaving.
A couple days later a friend comes over and looks at it and says the paint is cracked.
I take the car to a repair shop we've used in the past and get an estimate of $672 to repair the bumper as the tire did fracture the paint.
I mail a certified letter to the guy stating I'll wait a week to hear from him on how he wants to handle paying for it to give him a chance to not use his insurance company. I include the estimate with the letter.
Week goes by I hear nothing so file with AAA.
Got a call yesterday from the adjuster that took the claim and he states they won't cover the damages because the guy isn't on the policy.
From what I can gather from the doc's I photo'd the Jeep policy is in his mother's name and she and one other female are the named insured.

What is my next step?
Wife is adamant that we will not be putting any money out to fix the car, and I agree.
Would this fall under our comprehensive coverage which has a zero deductible?
Pisses me off that low life's like this are running around on the streets without insurance.