I have had a car, that mean I don't have It anymore right?
But when I say:
I had had a car, it still mean the same or not.
In the first one It Is present perfect, and the second one past perfect.
I had had a car when I lived In New Zealand
That doesn't work- the two things are at the same time and the past perfect is for the first of two linked actions.
I had had a car before I moved to New Zealand.
I don't think a car is a good example to demonstrate the use of "had had".
"I had a car before I moved to New Zealand" works just as well. There's still no need for the past perfect unless more elements are added.
We can use the car if we add some information.
When I moved to New Zealand, I bought a car. I had had a car before, of course, but never in a foreign country.
Thank you all for your help it always confused me but not any more thank’s to you.