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.
Yes.
Since it was caused by the vehicle, the vehicle insurance should cover it. Most home owners insurance companies would probably make a claim against the auto insurance company, if they covered it.
You home owners liability insurance should cover it.
If your garage doors were damaged by a covered peril as defined by your home insurance policy then the door would be covered.
Homeowners insurance does not cover automobiles nor there parts.
No, it would not cover damage of that nature. Garage Keepers insurance provides protection in case a vehicle is damaged by fire, theft, vandalism or collision.
No, Your Homeowners Insurance covers your Home. Your car Insurance covers you vehicle.
Yes, It will cover your garage door, but will not cover your friends vehicle.
Of course NOT. Homeowners Insurance does not cover auto accidents. That's what Auto Insurance is for.
Yes under personal property/contents
No, Your Homeowners Insurance will not cover windstorm damages to your neighbors vehicle because you are not liable for acts of nature. Your neighbors will have to look to their own Comprehensive Auto Insurance to cover windstorm damages to their vehicle.