We had taken delivery of our MH the week before when we left for a weekend trip with our two grands. We were on a two-lane road in the rain just as it got dark. All of a sudden, the engine quit, the headlights went out and the emergency flashers did not work. Luckily, I was able to coast off the road.
After being towed to a service center at around 3am, The technician, who was still working at that hour, found that the ground cables on the chassis batteries were so loose the battery management system shut the whole thing down.
The pre-delivery inspection the week before obviously left something to be desired, although I will take part of the blame for trusting the dealer.
Icing on the cake. A state trooper was following us when this happened. He stopped and gave me a warning ticket for driving without lights.