Hello. I own (lease) a 2009 Range Rover Autobiography. Have enjoyed the car greatly until about a month ago. While driving at night going 75 on the freeway, car suddenly lost all power. Dashboard, all lights, and ignition all suddenly failed. Car rolled to stop on side of freeway. Pushed "start" switch to stop/off position. Then again pushed start switch and car started normally. Drove home. Since then, car has numerous odd faults such as "diminished performance", "front alert warning failure", "suspension failure". Have taken car to dealer several times. Upgraded software and other repairs have not fixed the problem (which I suspect is some computer issue). Wife refuses to drive car after power failure and dealer seems unable to diagnose and fix problem. Has anyone ever had these problems? Any ideas how to fix. Thanks for the help, if there is any.