The contact son owns a 2014 Chevrolet Volt. The contact’s daughter stated that while driving 40 MPH, the vehicle loss motive power without warning and the vehicle stalled. The contact was able to pull over to the side of the road. The vehicle was towed to an independent mechanic and was diagnosed with battery failure. The vehicle was not repaired. The manufacturer was notified of the failure and the contact was informed that the time frame for a free battery replacement had expired. The vehicle was towed to the residence and had not been driven since the failure. The failure mileage was unknown.