The latest rage in automotive vehicle design is the so-called "software-defined vehicle." Instead of dozens and dozens of discrete black boxes, each with its own legacy cruft, an SDV is a clean-sheet approach with a handful of powerful computers, each responsible for a different domain, like powertrain, safety, or infotainment. This allows for a large degree of flexibility to do things in software, whether that's changing the handling, tweaking the UI, or boosting power output.
That's if you're an automaker, at least. Invariably, any customization a driver might want to do only exists within the bounds set up by that OEM. This might extend to some different UI themes, including the ability to upload your own images as a wallpaper and choose between a kaleidoscope of interior LED lighting colors. Even the full-dash, next-generation version of Apple CarPlay is yet to appear in anything production-ready.
For older cars served by the aftermarket, things are a little more free. This is all a long-winded way of saying, "Hey, check out this rad dashboard mod in a Nissan 300ZX I saw on Instagram over the weekend."
