Looking on the internet deeply has found these results:

I had a car is the most popular phrase on the web.

I had had car 111,500 results on the web	I had a car 161,900,000 results on the web More popular!
Some examples and use cases from the internet:	Some examples and use cases from the internet:
By then, the guys had cars. I thought you had cars posted outside. I had car trouble, I'm so sorry. Her husband said she had car trouble. I'm sorry I'm late. I had car trouble again. They had cars that moved faster than the wind. They had car seats 20 years ago. I had car keys, but they weren't mine.	you know, if I had a car, I could take her to the insane asylum. If I had a car, I'd be out looking for him! Wouldn't need one if I had a car. If I had a car this nice, I'd keep that stuff in the trunk. I stopped modeling because I had a car crash. I would go to the library if I had a car to get there. Now what really happened was... I had a car now, so I left to go running down the names on my list... looking for people who took those photos at the Grand Canyon. I had a car on my foot.

I had had car

111,500 results on the web

I had a car

161,900,000 results on the web

More popular!

you know, if I had a car, I could take her to the insane asylum.
If I had a car, I'd be out looking for him!
Wouldn't need one if I had a car.
If I had a car this nice, I'd keep that stuff in the trunk.
I stopped modeling because I had a car crash.
I would go to the library if I had a car to get there.
Now what really happened was... I had a car now, so I left to go running down the names on my list... looking for people who took those photos at the Grand Canyon.
I had a car on my foot.