You may need to check with the insurance company. Most companies will cover accidents that happen when a car is borrowed by a licensed driver.
The car owner's policy would cover the passengers' injuries. But if the car was used without permission -- that is, if the unlicensed driver just took the keys without asking - then the insurance company is unlikely to cover any claims.
The person that the vehicle belongs to.
When a car is borrowed (with permission) the insurance of the car owner is primary and the insurance of the driver is secondary. Here, the car owner has no coverage to pay for the damage to his/her own car, so the driver's liability insurance would cover the cost of the car. That is assuming the driver has liability insurance, if the driver doesn't have liability insurance, the car owner is stuck (unless he sues the driver).
It all depends on her insurance cover
Yes, if they have insurance and get into an accident, then their insurance will cover them. If they do not have insurance, then your insurance will cover them but your premiums may go up.
Put simply, yes, you can buy travel insurance or travel health insurance without primary insurance. That's just as well, as your primary insurance may not cover you (or cover you completely) when you travel overseas.
You do not have to own a vehicle to bind car insurance. If you do not own a vehicle you can purchase auto insurance to cover you when you are driving borrowed and unowned vehicles. Named non-owners insurance is a policy for individuals who drive borrowed cars and have a need for liability insurance. If you are required to provide an SR-22 to the DMV to keep your driving privilege and do not own a vehicle, named non-owners policies are the best solution. These policies will provide you with liability coverage in any car you do not own if you are found at fault for injuries or damage.
depends on your insurance plan, call your adjuster.
That depends on the insurance that you and the friend have. Your insurance may cover your son in any vehicle. Same as with the friends insurance covering any driver. You just have to call and ask.
A person may need cover for a single day if they have borrowed a car from someone whose own insurance policy does not cover this. Similarly, it could be taken out by someone who has lent a car to someone else.
Your homeowners insurance will cover your garage door subject to your deductible since it is part of your house. Your Home insurance does not cover damage to a vehicle though. That's what Auto insurance is for. Your friend will need to contact his auto insurance to fix his vehicle.