I have personally known of several cases where people did things including driving their car and remembered nothing when on Ambian.
Several years ago I worked ambulance. We were paid once a year. When I got my check, I went to my boss to tell her I thought I was over paid. She opened up the file cabinet to show me the cases I’d worked and I was shocked. MY signiture was on all those records and I had zero memory of all but a few. I did cpr in my sleep! It’s a darned good thing I was good at my job, and that none of those cases ever had to go to trial. Most of those cases took place during the night when I was asleep.