A paper that saying you can work even doe u are under 16 but must be 15 years old to get one or in highschool go and get one from your school guidance counselor or the office they will give you one.
90, but don't push your luck. If you can't afford your car, your best option is to contact whoever financed it and explain your dilema. They want your money, not your car, so they will attempt to work with you. Ignoring them is alot like car theft. I would say 30-45 days 90 is pushing it.
Depending on the reason it was impounded makes a difference. I have has this experience before. They were busted for driving without insurance and my car was impounded. I had to get proof of insurace and go to the police station where it was impounded from show them my proof of insurance and then they handed me a release to get my car from impoundment. Then I had to take the release to the yard and then I was able to get it out. Depending on where you are from can make all the difference in the world also. i would say yes if you take in documents proving that the car belongs to you eg insurance, log book (pink slip), and documents proving who you are eg photo id and prof of address.
It depends on what makes up the black spots. If it's just a little mildew, spray a weak solution of bleach, let it sit for a while then put it through the washer again. It also depends on the material.