In the world of automotive UX, there’s a fine line between great and dangerous.

Over the past few years, I’ve had the opportunity to work in this passion area of mine, and—unsurprisingly—it has been unlike anything else. It’s high-stakes, highly complex, and, often, highly disappointing.

So I put together a breakdown of the three immutable laws of great in-vehicle UX—and the few brands actually getting it right.