It’s also running virtualized in a lot of cars! Although I’ve seen more and more US car companies switching from QNX to Linux. Chinese car companies I’ve worked with all use Linux instead of QNX, so perhaps that is the future.

QnX is expensive for commercial use, that's most likely the driver for this.

Linux now supports real time too, even mainline. And there are open source RTOSes for smaller chips and critical applications like FreeRTOS.

Out of curiosity, do you mean Linux on bare metal, or Linux on top of QVM?

The latter is actually a common setup, used by Mercedes-Benz and Hangsheng if I'm not mistaken.

Linux on top of a hypervisor. There are several companies providing hypervisors, including the one I work at, so my experience is biased.

Bare metal! So, if you just give it enough time, it will run on Rust?

Only if it exposed to elements. Meanwhile Rust already works on QNX[1][2].

[1] https://www.qnx.com/developers/docs/8.0/com.qnx.doc.neutrino...

[2] https://doc.rust-lang.org/rustc/platform-support/nto-qnx.htm...