There's a real company promoting a not-so-real poweryacht called the Code-X. The differentiator—or "thing that's supposed to land a billionaire customer"—is that the boat will have two Formula 1 engines and two solar-powered electric ones.
It's not abundantly clear when you'd use the as-yet-unannounced electric engines, or exactly how efficiently the onboard solar panels will collect sunlight and charge the as-yet-unannounced batteries.
Let's be honest: You probably won't use them all that often. The point is to have them, and to tell your rich-ass friends that you are, in Code-X's words, "a pioneer and frontrunner on the path to a cleaner and more environmentally friendly future." The point is to be saying this while gunning your twin F1 Limor 710HP smogmasters to drown out the riffraff circling you in those environmentally unfriendly Jet Skis.
The most sinister thing about the whole operation is the length that Code-X went to render a completely non-existent boat into so many real-life scenes, almost as if James Cameron was the company's marketing consultant.