Most car manufacturers don’t make cars fun. They’re just serious. I understand how they can become risk-averse. They don’t want to risk making the Homer mobile — which is a great episode of The Simpsons — but there is a lot of space between serious and over-the-top.
Initially, Tesla did some fun things with their interface, but they’ve been one-upped. Actually, more like lapped. (Elon Musk is very busy destroying the federal government from the inside with his DOGE agenda, so who is leading Tesla these days? But I digress…)
Rivian is a rival EV (electric vehicle) maker to Tesla, and their update last Halloween is what car makers should strive for. They released free theme packs that changed the truck dashboard, vehicle sounds, and exterior lights to be like KITT from Knight Rider or the time-travelling DeLorean from Back To The Future. See for yourself in this video:
Here’s how it looks from the inside:

Here’s more pictures and details at the official website. If you want to read more about it, here’s an interview with Rivian’s chief design officer.
Unfortunately, these were available only for a limited time and only usable while the vehicle was parked. So that’s a major bummer. But this is just the start. Someday a car manufacturer will realize many people want their cars and trucks to look cool and be fun to use, and since most modern vehicles have large screens in them, this is a great way to do it. (Reportedly Toyota has hired developers from the game engine Unity to design user interfaces for their car dashboards, so hopefully something good will come from that.)
Here’s my vision of this — cars will include various themes that you can choose from. Obviously they don’t need to be too distracting with many animations while you’re driving, but there is a fun middle ground. There can be themes based on movies and video games and sports teams which could be purchased (since royalties would have to be paid, and there is work involved). If they were to make them self-moddable like some video games are, that would be great. (Most companies would not do this, but hopefully somebody will. They could release the modding software to ensure safety standards are met.)
Imagine the possibilities! If you want a Batman theme, you could. If you prefer to show off your favorite sports team, you could. If you want it to look like a vintage muscle car, you could do that (to some degree). There could also be various themes that aren’t brand-affiliated, like with nature landscape backgrounds, or flowers, or lightning, or a steampunk design. This could also sync with ambient lights to produce a greater effect. And it could include sound effects that go with each theme. There is so much possibility here to make this an awesome thing. Somebody get on this.