I was alone in the car driving back from the airport in the dark early am when that happened to me. I was on the Freeway going 70 mph and literally did everything I could to stay awake.
I couldn't pull off on the isolated freeway...Thank God I made it home. I was terrified.
sw
I know what you mean. I had even tried slapping my face.
But, seeing the vehicle heading for the ditch surely got my attention.