A jury was poised to begin deliberations after Kerry Kennedy told them how she accidentally took prescription sleeping pills that then "overtook" her, causing her to crash her car on a highway. Kennedy, 54, took the stand to testify in her own defense Wednesday in her drugged driving trial. She is accused of driving under the influence of zolpidem, a sleep medication better known as Ambien, and slamming her SUV into a truck on a New York highway in July 2013.One final witness, a forensic pharmacologist, is expected to be called by the defense on Thursday to testify to the...