I have a recollection of a scifi book I thought was based on the Orison Wells Citizen Kane story - at least I thought the title was a misspelling like "Citizen Caine", but I've had no luck tracking it down. The story I recall is about the titular character in a future society. He makes a lot of money in the "energy stock market" where he buys energy futures when everyone thinks it will be a season of no-energy and he will have to "pay" for the lack, but instead it is an abundant season and he comes out waaaay ahead. What I remember of the plot is his interactions, his rise to importance (and maybe fall) in the future society, and somewhat of an observation on "thinking big". When I later saw the movie "Citizen Kane" and Ayn Rand's "Atlas Shrugged" they both resonated with this much worse and less high-brow, but memorably fun, novel. It also was the right mid-teenage time for this common joke to stick with me: Our hero is driving (hovercar?) down the highway, stops somewhere to do business or contact a friend. Ending the conversation, he asks his friend/contact "where is the fastest place to get gas around here?" The other one answers the equivalent of "Two blocks over, Mama Hernandez's Mexican restaraunt - order the bean burrito". "No, I mean FUEL for my vehicle." "Oh, then there is a station on the corner. Be more specific next time." I don't recall the plot, but the book was filled with "future cars" and "future energy" and a "future American society" and maybe even "future decline of America", but all seemingly based on a mix of 50's love of machines, wide open highways, and open space (Texas? Deserts? Plains?), and more 80s future. I don't remember much "space", just speculative pulp adventure in the nearer future. I definitely would have read it in the late 80s or early 90s, but it would have come from a used bookstore, so ???