electrical failure of dc to dc converter, confirmed by manufacturer while driving on the highway i got an error message and immediately afterward the entire car shut down. no power steering, no brakes, no lights or hazards, no airbag. i was able to stop the car by gliding into an embankment in the left hand lane of the highway. was towed to the dealership. only by luck was my car not hit from behind or cause an accident behind me as I had no ability to put the hazards on. called 911 several times to assist but they did not come during the two hours i was on the highway. this issue has been reported in other range rover sports 2023 I had a recent full checkup of the car within the last month.