No - but you may have a short period in which an additional or replacement car may be covered under your existing policy. Check with your agent.
No.
yes you do or how are you ment to drive the car
absolutely, just be sure to buy insurance for it
Yes, but you can not drive it.
If you own a car and buy insurance to cover it, you are covered although the insurance is on the car. You can allow other people to drive the car and they will then be covered even if they don't have insurance.
You need insurance the very moment you drive the car off the lot.
When you test drive it, yes. Once you commit to buy it, insurance is your responsibility.
You don't need insurance, but the car that you drive does.
your only required to have insurance if you are legally licened to drive a car. check with your local DMV and/or highway patrol.
Before you drive it off the dealer's lot.
One has 24 hours to drive a used car to home without tag. But actually, if one has a bill of sale and a proof of insurance, there will be no problem to drive a used car to home.
I would think that may vary depending on your location but in general, if you are old enough to drive and have a drivers license and a car, you would be old enough to buy car insurance.