It was soon after 7 am in a secluded lane and of course I thought he was dead (I didn't see the woman at first) and phoned 999. After a long time of trying to locate us, I was told to hammer on a window, which woke them up (eventually). They had been too sleepy to drive and had the engine on for warmth. It was a while before my heart returned to normal beating! I also felt stupid.