There is no buffer for the violation in New Hampshire. If the tags are expired, you can get a ticket.
It is a good idea to get your car registration renewed, it is against the law in most states to drive a vehicle with an expired registration, you are likely to get a ticket if caught on the road.
As long as you have his permission, there is no issue.
No. But the dealer has, or can get you, a temporary registration.
On or about the time it expires. Most people renew it within the 30 days prior to expiration.
You get arrested
The warranty expires when the warranty expires. There is no grace period.
You'll be ok with registration as long as you have your part of the V5, and you can get insured strait away either as a full insurance or as a second car added to your policy.
yes, when you pay for it if you want to drive away
Yes, it is illegal. You will be cited and your car will be impounded.
I suggest you don't.
It is not illegal in US or many countries for someone to drive your car, except when the driver does not have a driving licence. The owner can be ticketed, if the car does not have valid registration, emissions and safety inspection done.
NO. oNCE YOU HAVE TITLE TO THE CAR YOU ARE REQUIRED TO HAVE YOUR OWN INSURANCE.