TODAY | February 26, 2014
>>> this half hour with day three at the so-called drugged driving trial of kerry kennedy . and she is set to take the stand today. katy tur has the latest.
>> reporter: kerry kennedy walked into court on tuesday without saying a word. her family, including mother ethel kennedy , the widow of robert f. kennedy have been at her side since the trial began. the ex-wife of andrew cuomo watched intently after the prosecution said she should not have been driving. she is charged with misdemeanor driving under the influence after a 2012 accident in west chester county new york. police say she sideswiped a tractor-trailer and kept driving. according to their report, officers found her slumped over the wheel of her car in her gym parking lot. kennedy has long maintained her innocence.
>> i remember 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 .
>> kennedy 's lawyers argue that although she did take the generic form of ambien, it was accidental and mistook it for her thyroid medication. on the stand for the prosecution, elizabeth spratt told jurors that it could be two hours before ambien took effect. but on cross-examination, the defense got her to admit that kennedy may not have known she had taken it. if convicted, she could face a year in jail, a fine and a suspended license. for today, katy tur, nbc news, new york.