killall-q

Because the car didn’t recognize it as a red light, probably due to all the green lights that were facing a similar direction.

The issue is not the speed at which it took the turn, but that it cannot distinguish which traffic lights are for the lane the car is in.

She needn’t worry about manually optimizing battery wear, and, in fact, the most harmful thing you can do to a battery is to fully deplete it frequently.

Educate her about built-in optimized battery charging. iPhones and some Androids have it.