I'm not sure. It depends on where the story originated and who wrote it. Sometimes stories labeled as such can be based on real events, but with some fictional elements added.
Well, 'Papa Hemingway in Cuba' isn't a true story. It's more of a creative interpretation or imaginative take on certain themes or ideas related to Hemingway's experiences in Cuba.
Love and acceptance are common themes. These stories often revolve around the characters finding and accepting love, both from others and for themselves.
I'm not sure specifically which 'Papa New Guinea car story' you mean. There could be many stories related to cars in Papua New Guinea. It could be about a unique car journey, a traditional vehicle used there, or a story of a car that had an impact on the local community.
I have no idea. It could be a relatively obscure novel or one from a specific genre. You might want to check popular fiction in the fantasy or religious genres to see if you can find it.