A few months ago I made a drawing with a couple futuristic nonsense motorcycles I 3d modeled for that image. I wasn't entirely happy with the designs and the illustration overall so I decided that I could make a better version. Also I recently bought a 3d printer because I need another hobby to fill the time I don't have and I really wanted to print something I made that's a bit fancier. Because of that I might have gone a bit overboard on how precise and detailed I made the 3d model. I certainly didn't need to do that just to export the lineart for this.
Also I intend to use this illustration for a little game I'm making for fun, So why don't you check out a game I already completed. This is is a link to a little puzzle game called Dream Mechanic available for free for windows here: https://ultra-shenanigans.itch.io/dream-mechanic