Sleep is a powerful drive that can overtake anyone. When you go to bed, there is no conscious decision to fall asleep. Instead, you wait until sleep overtakes you. The body simply “switches off” the conscious mind without your “permission.” This is what makes drowsy driving so dangerous. No matter how hard you fight it, your conscious mind will turn off, and at that point, your car is moving 65 mph down the highway without a driver. If you attempt various tricks to stay awake such as loud music and.