good to know !
my best friend has two cars, and most of the time, he likes to show them together at our yearly local festival.
in order to get them there, either his nephew or i go to his house and drive one to the festival, then he takes us back to our respective houses and we pick up our cars and return to the festival, parking together.
at the end of the event, we drive our car[s] back to our house[s] then return to pick up his other car and drive it back to his house where our daily driver was sitting, then go home from there.

If he has them on a collector policy, you or his nephew driving is almost certainly not covered.

But isn’t the CAR still covered if I let a friend drive my car and he wrecks?

Very likely not. Classic car policies are very restrictive. With most of them, coverage is only afforded when a listed driver is driving. That includes comp/collision and liability.

I wondered about that when I drove one of Mike's Six-Pack cars to a show while he drove his pink Hemi Cuda so he could win both classes I didn't ask about it because I was just excited to drive one of his restorations to a show.

Gus

is it possible to amend a policy to include who one could conceivably think of several others who may, at some point, be drivers of one's vehicle ?
if so, wouldn't there be a limit, say only one or two others ?

Not with a classic car policy, at least not that I am aware of. Like I said, it's cheap for several reasons, chief among them is the restrictions/limitations placed on coverage.

On our Hagerty policies i just listed everyone( family, wife Son-in-law, daughter) i would let drive them. Costs more but less worries.

If they let you, great. That's a positive thing, and it never hurts to ask. But always ask. It does hurt not to ask.

Ok I have full coverage am I covered by my insurance or theirs if I drive someone's else's car? If a friend drives my car is it covered by my insurance if they wreck? If not am I responsible for the damage they caused or are they?

Thanks Mike

"Full coverage" is not a real thing. It's a term that someone made up at some point and it gets parroted about, but it doesn't mean anything.

As far as which insurance would be primary in the situations you describe, that depends upon the state, and the language in each person's insurance policy. That's what will determine which policy is primary and which is excess. If both policies are determined to be primary or excess, then the damages are handled on a pro-rata basis between the 2 policies.