Originally Posted by
lizatola 
The nearest store is 2 miles away, though, and he's in sales for work and needs to drive. He also travels to a different city for work and I wonder how this will affect his travel there? Will a different state allow him to rent a car and drive there, etc? So many unanswered questions.
Yes, unanswered questions HE needs to figure out. He screwed up royally and he gets to suffer the consequences of his choices.
IMO, you don't need to TELL him anything, as whatever words come out of your mouth will bounce right off his ears. Time to start taking action, and start to on YOUR needs and your son's needs.
Are you able to get the car out of impound? You will also need to make sure your AH doesn't take the keys from you and drive off with the car at some later date. I would also discuss with your son the danger of getting in the car with his father.