It's not a hard-running race. PREEMPT_RT is soft realtime and if you rely on it for your brakes you're going to crash. AGL has not yet produced any kind of usable system that can be certified for functional safety under ISO 26262 or IEC 61508. Just a core kernel with no drivers.

We run into a lot of OEMs who switch to Linux because of AGL and come crawling back to QNX many expensive months later to start over with a viable solution so they can deliver.