This fragment wasn't included in her radio documentary ("If It Be Your Will", 2006, which can be heard in numerous places in the web; personally I suggest this page; click EXTRA to get the documentary transcription).
But the Files feature the transcription of the unedited version: http://www.leonardcohenfiles.com/leonard2006.html
"Carmen Gia" is actually a sports car Volkswagen Karmann Ghia.You even drove her from Greece back home to Norway?
Yes in her little Carmen Gia, and she liked to drive fast, and I didn’t like to drive that fast, but anyway, we got there, and, yes we drove from Athens to Oslo. That was a wonderful drive. Although I remember us quarreling a lot. I don’t know whether it was about the driving or not, but I do remember that it was quarrels that arose. But they were healed because we’d stop at some little Italian cafe and have pasta and a bottle of wine or some cheese and bread, and we’ d get over it. But I remember coming in to Oslo, and I remember another time coming into Oslo by train, from Yugoslavia, and my coat was stolen in the train, and I got into Oslo in the middle of a snowstorm without a coat, I remember that. So my memories are very, eh…, unimportant somehow. I mean, they’re unimportant to me, so I can imagine how unimportant they are to you [laughter].
Random image (it could be a cabriolet as well, but I guess that's not a good idea for Norway ):