A friend last week was in similar situation. He started for Vrindavan from Delhi. Just 4-5 km ahead on Yamuna Expressway, Fog was more than anything. He was not able to follow other cars on his automatic transmission car. Then he took it at side and stopped with flasher and lights on. Waited for an hour. After an hour he decided to go back. Car self was not working due to flasher and lights were on for an hour or so. After switching off all things for 10-15 minutes, car started. Otherwise car helpline can take 4 more hours to charge battery or jump start the car. He got the indication, Not to move ahead. He was happy to be back.