In the video there is a steering wheel symbol near the speed that is highlighted in blue. That indicates autopilot is engaged, when the driver turns the wheel to correct the mistake the symbol turns gray indicated autopilot disengaged.
I have lived in Phoenix, Arizona my whole life. I didn't know what DST was until I was in high school. The entire concept feels bizarre to me.
The only time I've run into confusion when coordinating a meeting with another time zone is during the DST change. Yes, this week we are two hours behind but next week it is only one, etc.