Transcript for Kerry Kennedy Driving on Ambien
Next, tonight, here, to a member of the famous Kennedy family, back in court, after a dangerous moment on the highway, blaming it on an ambien mixup. ABC's linsey Davis, now. Good morning. Reporter: Despite a request by her lawyers to have it dismissed, for now, Kerry Kennedy's drugged driving case is moving forward. Kennedy, a daughter of Robert F. Kennedy, was arrested back in 2012, after state police said she swerved her Lexus into a tractor-trailer on a New York highway and was later found slumped over the wheel of her car. Not long after the accident, she told reporters she only remembered getting on the highway. And then, I have no memory until I was stopped at a traffic light and a police officer was at my car door. Reporter: She told police she may have taken the powerful sleep aid ambien that morning, after mistaking it for her thyroid medication, and then getting behind the wheel. Ambien carries a warning against taking it and then driving. Reporter: Basically, your brain is shut off, but your body is moving. Reporter: And so, you would be just kind of driving, but almost as if you're asleep. In a hypnotic trance state, yes. I want to apologize to the driver of the truck who I apparently hit and to all those I endangered. Reporter: Today, Kennedy waived her right to attend jury selection because she would be out of the country, continuing her late father's efforts to fight child labor and try to end child slavery. The prosecution is going after Kennedy for drugged driving, which is a misdemeanor. She has pleaded not guilty. That be up to a jury to decide next month. David? Linsey, thank you.
This transcript has been automatically generated and may not be 100% accurate.