Son was driving so this info is a paraphrase description of events. I already new that the CV axle had gone bad and was planning on having it repaired this week. As my grown son was using the car while visiting for the holiday he was in the process of making a U-turn . He stopped short of the curb and put it in reverse and nothing. Put it in drive and nothing. Was told that it is probably a flex plate. $20 part and a 10 hour job. Any thoughts from the smarts?