It can be anything.
I came across this article of a 1978 Datsun 810 wagon. I had the sedan. I loved that car. It was basically a 240Z turned into a sedan/wagon. It was so much fun. However, I’m glad it’s gone for I would probably now agree with my father who said “it rides like a lumber wagon.” I didn’t care at the time.
What makes you nostalgic?