That kind of crap is probably more common than we think.
A few years ago someone I know had a practically brand new Ford Explorer.
In leaving the grocery store she started it, put it in drive and it immediately accelerated all on its own and slammed into a brick wall.
Steer by wire and throttle by wire is stupid and dangerous IMO.
The history of that sort of event is mostly that of people standing on the accelerator, who insist afterwards they were standing on the brake pedal. See the Audi “unintended acceleration” hit piece by CBS 60 Minutes, and the aftermath, for example.
No drive by wire required.
Same deal with the Jeep Cherokee models in 2015. Transmission could go from drive to reverse while at high speed. Happened to my Cherokee and we got rid of it the next week.