You can run your in-car infotainment system on Linux, Mac OS, or Windows. QNX can run your brakes and your ignition. Your car dashboard (cockpit console). Your insulin pump. You cancer treatment radiotherapy device. Interplanetary space probes. High-speed rail systems. Everywhere you need software to just always work without a "Windows has experienced a problem and needs to restart" or the Linux equivalent of just silently hanging and requiring a hard power cycle. QNX predates phones by decades, the BB10 was just a passing thing.

But sure, it's also in infotainment systems and at the heart of self-driving cars.