Can a 25 year old person be on their parents' auto insurance?
Answer Sure, if your parents will want you attached to their policy, and if you are living with them.
How can a 16-year-old get auto insurance if not through their parents or older siblings?
Answer They can't. Minors cannot enter into contracts, insurance or otherwise.
Can a minor in the state of Georgia have their own auto insurance policies or do they have to be placed on their parents' insurance?
Insurance under 18 Yes, you can but its best to be under you parents policy... Since the price will be "Very High" since your under 18.
Should parents insure their eighteen year old kids on their insurance policy or make the kids get their own coverage?
Answer The car's insurance would kick in first because YOU gave them permission. Their insurance would pay for whatever is left over.
Can a person back pay non-owners auto insurance so they can show proof of insurance to retain their drivers license and how do they go about it?
Answer There is no retro active insurance. If someone is not insured at the time of the accident any penalties/legal actions are valid.