Chrysler has had similar issue[0] this last year, their Pacifica Minivan had a software crash that would cause the engine management computer to crash and the vehicle to completely lose power while operating (inc. at highway speed). In effect you'd have complete loss of electrical power and even power steering, brake assist, and hazard warning lights(!) would be lost.

Took them six or more months to fix it as they weren't able to reproduce the software glitch.

[0] https://www.nytimes.com/2018/01/12/business/chrysler-pacific...