Worried of Yorkshire

18 plate Q7. 75,000 miles. Diesel. Total failure in middle of ‘smart’ section of M1, fortunately in roadworks and fairly slow traffic. Unable to get out of middle lane. After 10 minutes of nervous waiting traffic officers managed to block two lanes and drag car to refuge. Dealership has confirmed alternator needs replacement. Only prior warning was about 10 miles before failure when message (in non urgent Orange) advised electrical fault, refer to dealer ! Now waiting to see how long the ‘back order’ will take. So, if you were in the traffic jam by Castle Donington on Tuesday evening, sorry. If there had been prior warning of low charge I wouldn’t have been on the motorway.