What happens when your car gets impounded and you don't have the money to get it out?

What happens when your car gets impounded and you don't have the money to get it out?
It varies place to place, but it is stored for a time, usually 30 days and them sold. There is a towing fee and a daily storage fee that can really add up quickly. If you want the car, you need to get it out somehow ASAP.