Depends mostly on two things... 1. do they reside in your home? Are they minors or full-time college students? And 2. How often do they operate your vehicle and do they have their own policy and vehicles? If they are grown-ups and occasionally drive your car while visiting, and have their own cars and insurance elsewhere, then they don't usually need to be added. They are just 'occasional operators" If they are minors and/or full time college students under the age of 25, and drive your car on a regular basis (ie. 2x per week or more..), then they really should be added. Once again, they'd be listed as "occasional driver"s, and their driving record etc... can effect your rate, but nominally. Hope that helps.
anything
You need insurance if you own a car. As long as you are living with your parents and driving a car titled to them (even if it is "your" car), you just need to make sure you are listed on their policy as primary driver of your car and an occasional driver of the other family cars. They might save a dollar by having you EXCLUDED from the family car, but then you would have no coverage if you were to drive it.
no
Only people with a license and car insurance are legal to drive a car, though many people without a license and/or insurance drive cars daily.
No, Homeowners insurance does not cover damages to your automobile. Your home insurance policy is property insurance for the specified structures and real property listed on the policy. Cars are not listed as covered property on your home insurance policy, that's what auto insurance is for.
Yes, it is state law that cars have insurance so they won't let you drive off the lot without proof of insurance.
no.
There are no children's cars with motors. That would be inherently dangerous to everyone, including the children.
liability insurance, see North Carolina
It depends on the policy in the USA. In most European countries only named drivers can drive a car regardless of insurance policy - rental cars are the exception for obvious reasons.
Actually, cars don't drive. People drive cars.
Subject to any exclusions in their policy, with permission she would likely be considered an insured driver, but many many exclusion, and one is that she isn't a 'regular'' driver, without being rated on the policy of course.