I also nominate the "Toyota Unintended Acceleration" issue. A lecturer friend of mine likes to reference these slides from the trial: https://www.safetyresearch.net/wp-content/uploads/2013/11/Ba...
Did Toyota change their safety culture as a result?
Hah… no.
https://en.wikipedia.org/wiki/Sudden_unintended_acceleration...
The code quality can be best described as criminally negligent, unsafe, spaghetti garbage with incorrect concurrency sprinkled on top for laughs.
2. In my car, if I step gently on both pedals, they both take effect. (Which is reasonable: starting uphill is a thing.). If I step harder on both pedals, the car chimes at me and the motor output is reduced automatically.