Whilst driving at a constant speed on a dual carriageway or similar, engine cut's out without warning for a few seconds and then starts up again. Often before you've had a chance to stop. Seem's to happen more often at night with wippers, lights and heater on, but this may be a coincidence, Main dealer had it for a couple of days and could find nothing wrong. Can Anybody Help? Please post here or Email me @ [email protected] Thanks.